#linuxcnc Logs

Jan 04 2018

#linuxcnc Calendar

12:00 AM MrHindsight: and then you can have added glass fiber, beads, CF, etc
12:03 AM MrHindsight: not sure who has that in filament form
12:03 AM MrHindsight: if you're serious about FDM I can't imagine being without your own pellet to filament extruder
12:03 AM MrHindsight: or at least having a printer than can handle pellets
12:03 AM codepython777: cant find 6/6 for 2.85mm um printers
12:03 AM codepython777: MrHindsight: how much does a pellet to filament extruder cost?
12:03 AM MrHindsight: polymer handbook
12:03 AM MrHindsight: long link
12:03 AM MrHindsight: https://www.researchgate.net/file.PostFileLoader.html?assetKey=AS%3A398861811109892%401472107474414&id=57be93d23d7f4b1442162f6b
12:04 AM codepython777: MrHindsight: any recommendations for that machine?
12:04 AM MrHindsight: codepython777: I build my own
12:04 AM MrHindsight: and I don't keep track of whats out there
12:04 AM MrHindsight: but let me check
12:05 AM codepython777: MrHindsight: https://www.filastruder.com/products/filastruder-kit ?
12:05 AM MrHindsight: that will turn pellets into filament
12:05 AM MrHindsight: how well I'm not certain
12:06 AM codepython777: MrHindsight: http://www.noztek.com/product/the-noztek-pro-abs-and-pla-filament-extruder-for-3d-printers/ ?
12:06 AM MrHindsight: codepython777: look down the page at Links to user-reported filament tolerances:
12:08 AM codepython777: MrHindsight: https://www.filabot.com/ - thats $10k :)
12:09 AM MrHindsight: I can get a much nicer lab extruder for way less
12:12 AM codepython777: https://felfil.com/diy-filament-extruder/
12:12 AM MrHindsight: https://www.ebay.com/itm/AL-BE-Filament-Plastic-Extruder-With-IMS-Material-Loader-and-Water-cool-tub/273009147258 $2450 and much better
12:16 AM codepython777: MrHindsight: http://d3dinnovations.com/filafab/ ?
12:16 AM Wolf__: sounds cheaper to have part made from aluminum
12:16 AM codepython777: Wolf__: not if we need a 5-axis cnc for it
12:16 AM MrHindsight: if only making a few of them
12:16 AM codepython777: we need a few only
12:16 AM codepython777: MrHindsight: what is the difference between these desktop extruders and the one you linked?
12:16 AM Wolf__: sketch looked simple enough :P
12:16 AM MrHindsight: how well they are made
12:16 AM Crom: woooo 4x72 belt 5pc $50 https://www.ebay.com/itm/Lot-of-5-Pcs-Sancap-abrasives-4-x-72-36-Grit-Aluminum-Oxide-Sanding-Belts/263412666330?hash=item3d549e4fda:g:ZJwAAOSw5cNYZaKJ
12:17 AM MrHindsight: size of the extruder screws, motors, heaters, heat zones tec
12:19 AM MrHindsight: if you want really consistent filament then you need the motor speed and heat to be constant
12:19 AM MrHindsight: and consistent
12:20 AM codepython777: so PLA and ABS can be recycles in these machines?
12:20 AM codepython777: nylon?
12:20 AM MrHindsight: yes
12:20 AM MrHindsight: and you can make your own blends
12:21 AM codepython777: nice!
12:21 AM MrHindsight: add CF or glass
12:22 AM MrHindsight: any cange in extrusion speed will change the thickness of the filament
12:23 AM codepython777: how much is the cost differnce between - making your own 3d print filament from pellets vs buying online?
12:25 AM codepython777: $10 a kg for the pellet - and for the spooled version it is at least $20 per kg
12:25 AM codepython777: am i wrong?
12:26 AM MrHindsight: codepython777: depends on where you buy from but ...
12:27 AM MrHindsight: I don't see that many types of filament available
12:27 AM MrHindsight: but there are thousands of blends in pellet form
12:29 AM MrHindsight: https://www.professionalplastics.com/PlasticResinsPelletsforExtrusionMolding
12:30 AM codepython777: they dont put their prices online
12:30 AM codepython777: 1000lb of ABS is $2k
12:31 AM MrHindsight: in pellet form most are in the few $/lb range
12:32 AM codepython777: what is 5IZOD?
12:32 AM MrHindsight: they are traded like commodities in pellet form
12:32 AM codepython777: thereis no PLA on that site?
12:33 AM MrHindsight: US $699-1362 / Ton PA66/Nylon 66/vrigin PA66 pellet/PA66
12:33 AM MrHindsight: PLA is an oddball
12:33 AM MrHindsight: not really popular for injection molding or extrusions
12:34 AM MrHindsight: just 3dp
12:35 AM MrHindsight: http://www.plasticsnews.com/resin
12:35 AM MrHindsight: but you buy in bulk
12:50 AM MrHindsight: codepython777: https://www.historicalstockprice.com/pla-historical-stock-prices/
12:52 AM MrHindsight: wrong link
02:12 AM Deejay: moin
02:42 AM IchGucksLive: hi rain rain and flood around
02:52 AM MrHindsight: will trade you for -25C
02:54 AM MrHindsight: $1k https://chicago.craigslist.org/nwc/hvo/d/ycm-miller-cnc-mills/6422845336.html
02:58 AM MarcelineVQ: each, dafuk
02:58 AM Wolf__: damn, if it was a bit closer..
03:10 AM MrHindsight: $1500 https://chicago.craigslist.org/nwc/hvo/d/hyundai-cnc-lathe-hit18/6441950016.html
03:11 AM MarcelineVQ: the kind of ad description only craigslist can provide
03:33 AM IchGucksLive: fragalot: does the money flow out of yopur wallet like waterfall :P
04:00 AM gloops: the thing with this, drawing up a good estimate is a good idea, lots of stuff you dont think of if you arent careful
04:01 AM gloops: oh i need 3 motors 3 screws a few rails < mistake
04:02 AM gloops: the many other 25 and 40 quid things add up to a lot
04:04 AM MarcelineVQ: With fairly little plannig ahead I have been keeping a spreadsheet of costs so far out of curiosity
04:06 AM MarcelineVQ: and yeah it adds up awfully fast for the little bits
04:24 AM archivist: when I did up my generator I estimated £50, spreadsheet said £197
04:27 AM MarcelineVQ: amazing! a perfect example of my estimation rule. estimate the best you can, double it, know that humans are bad at estimation, so double it again
04:30 AM archivist: for new production that sort of sloppy estimate does not cut it, need to get everything on a spreadsheet up front
04:30 AM archivist: then after getting the order beat all the suppliers down :)
04:31 AM sync: it ususally does tho
04:31 AM sync: I never calculated any product price by actual cost
04:33 AM archivist: you can increase profit a lot with good buying
04:35 AM fragalot: what money? lol
04:35 AM fragalot: oh ich's already left
04:37 AM MarcelineVQ: I think he has client issues and his happened to select you since you had joined last. Seemed like a comment for Wolf__ or MrHindsight
04:37 AM archivist: fragalot, see also http://www.metalscraping.com/w2-Preview.html
04:37 AM fragalot: It could have been very well aimed at me, MarcelineVQ since he made me purchase about 3k worth of parts yesterday, lol
04:38 AM MarcelineVQ: :X
04:38 AM fragalot: archivist: Aye, i've played around with scraping a few times already; I just need larger reference surfaces than what I have today to do it better
04:38 AM Wolf__: I have under 1k worth of stuff in the mail (i think) so might not be aimed at me lol
04:40 AM Wolf__: get to wait and see if fedex gets my DRO(s) here later today with this storm going on here
04:40 AM archivist: fragalot, http://www.metalscraping.com/Images/w19$PICTd0028c.jpg that is showing how a level can see a plane
04:41 AM archivist: or twist
04:41 AM gloops: well i dont suppose it matters if its just for pleasure and the cash isnt an issue, you can end up spending 3k on something you could have bought for 1.5k though
04:41 AM XXCoder: archivist: interesting picture
04:42 AM fragalot: gloops: it's because I'm going for high quality high performance gear on this thing
04:42 AM fragalot: archivist: I did something similar using gauge blocks on my lathe
04:43 AM fragalot: but you still need a straight edge that is at least 2/3 of the length of the ways you will mount the rails to if you want to do it properly
04:43 AM Wolf__: thats just pretty http://www.ssd.noaa.gov/goes/east/eaus/h5-loop-ir2.html … blah
04:43 AM archivist: I dare not do that on my southbend :)
04:45 AM fragalot: archivist: it's more fun to do it on a chinese lathe with hardened ways of varying hardness. :)
04:46 AM fragalot: but it's much easier to just accept that nothing is perfect and work around it
04:46 AM archivist: I can feel about 10-15 thou wear near the headstock
04:46 AM jthornton: morning
04:46 AM XXCoder: archivist: because it would warp in protest of being measured for accuracy? ;)
04:46 AM XXCoder: hey jthornton
04:47 AM archivist: XXCoder, no, it is circa 1940's and badly worn
04:47 AM XXCoder: yeah I guessed that. had to joke though :D
04:48 AM archivist: was amusing when I made a 3ft shaft and had to compensate all the way
04:49 AM Wolf__: I kinda want a MT4 setup bar to check my lathe, at the same time I’m not sure I want to know if its off or not lol
04:50 AM archivist: beware of cheap setup bars with bad tapers
04:50 AM archivist: must measure mine to confirm its error, didnt fit any socket well
04:51 AM fragalot: I found it's better to just cut a piece of stock to measure the taper
04:55 AM * fragalot is currently in pointer hell >.>
04:56 AM jthornton: I gotta replace the regulators on my propane tanks and I see I have a choice of several sizes... I hope the label is still on the old one
05:39 AM jthornton: https://www.amazon.com/UCTRONICS-802-3af-Splitter-Ethernet-Raspberry/dp/B01MDLUSE7/ref=sr_1_5?ie=UTF8&qid=1515065904&sr=8-5&keywords=poe+splitter
05:49 AM Tom_L: 18F
05:49 AM jthornton: 13°F
06:32 AM jthornton: 12°F
06:39 AM XXCoder: 2^6+4 F
06:51 AM jthornton: XXCoder: you forgot the °
06:51 AM XXCoder: lol
07:35 AM Loetmichel: *meh* tuesday our bosch PSR 14.4_2 went on strike. one brush eaten completely( incl holder), other down to the copper, no carbon insert left. so i ordered a new motor for it. today it was delivered. Same item number, but dosent fit: wrong gear on the motor shaft for the planetary gear in the drill. so i dremeled off the shaft off the old motor, hammered the shaft stub out of the gear, dremeled
07:35 AM Loetmichel: the gear off the new motor, hammered the old gear onto the new shaft... works... cant they give the thing a new item number when they change the design??? *grrr*
09:02 AM IchGucksLive: ;-)
09:02 AM IchGucksLive: rubber shoes is a good thing in flood times
09:09 AM fragalot: Christ the STM32 manuals are lagging behind
09:10 AM fragalot: IchGucksLive: has it floded where you live then?
09:10 AM IchGucksLive: im way up so i flood others on downflow
09:10 AM fragalot: lol
09:14 AM Loetmichel: IchGucksLive: rubber trousers are even better
09:14 AM Loetmichel: and/or a zodiac.
09:25 AM fragalot: Loetmichel: actually I think it's better to live higher up than to live lower down but have a rubber boat
09:25 AM fragalot: :P
09:26 AM pfred1: I'm in a blizzard
09:27 AM Loetmichel: zodiac...
09:27 AM Loetmichel: ah, you meant: THATN to have one
09:27 AM Loetmichel: THAN
09:27 AM Loetmichel: i see
09:28 AM pfred1: I'm going to try to get to my mailbox right now so I can bury it
09:29 AM pfred1: otherwise when the plow goes by it'll knock it into the field
09:29 AM pfred1: the windrow off the plow takes mailboxes out if they go too fast
09:29 AM Loetmichel: fragalot: testament to german engineering even in such mundane things as windows: https://www.youtube.com/watch?v=hacakomP0_M
09:29 AM Loetmichel: doesent leak at all :-)
09:30 AM pfred1: Loetmichel use some of that german engineering to fix IME
09:30 AM Loetmichel: IME?
09:35 AM fragalot: Loetmichel: I did indeed mean "than"
09:35 AM fragalot: what's IME?
09:52 AM miss0r: Just finished this controller today; felt like sharing: https://imgur.com/a/6o5XV
10:03 AM JT-Shop: miss0r: very nice indeed
10:04 AM Loetmichel: looks very professional
10:05 AM fragalot: Neatly done :)
10:14 AM roycroft: but what does it look like on the inside, miss0r? :)
10:20 AM archivist: scroll down to see!
10:24 AM roycroft: oh weird
10:24 AM roycroft: my browser did not have a scroll bar the first time i looked
10:24 AM archivist: it is one of many sites to use poor js to get the images
10:24 AM roycroft: it looks great on the inside too
10:24 AM roycroft: which is what matters
10:24 AM archivist: plain html would have told the browser the whole size
10:33 AM miss0r: Thanks. I hope it looks professional, I do stuff like that for a living
10:35 AM miss0r: Everything can look nice and tidy when you have thoes wirechannels to put'em in ;)
10:56 AM pfred1: phew that was round one of digging
10:58 AM fragalot: really windy here today
10:58 AM pfred1: here too
10:59 AM fragalot: just heard on the radio that the ardennes got a ridiculous amount of snow today... Up to 3 meters in one night.
10:59 AM pfred1: apparently this storm underwent a bombogenesis
11:00 AM pfred1: nah I won't get that much here
11:00 AM pfred1: not even a foot I don't think
11:00 AM fragalot: alps, not ardennes
11:01 AM pfred1: still a nasty nor'easter blowing outside
11:02 AM fragalot: Aye
11:02 AM fragalot: cellar is taking in water here
11:02 AM pfred1: I just packed my mailbox so hopefully a plow doesn't blow it in a field
11:02 AM fragalot: they changed out the meter a few weeks ago, and it's coming in through the pipe entry
11:03 AM pfred1: sounds like you could use some duck seal
11:03 AM pfred1: we call that the mast
11:03 AM fragalot: i'm going to ask the utility company to replace the main water pipe as it's still old iron pipe
11:04 AM pfred1: good old iron pipe
11:04 AM fragalot: but i'll do that in summer, so they can properly seal up the wall, rather than fight the water
11:04 AM pfred1: I hear we still have some wooden pipes in service here
11:04 AM fragalot: not lead? :P
11:04 AM pfred1: nope wood
11:04 AM fragalot: for pressurized mains water?
11:05 AM JT-Shop: mmm, fresh scrambled eggs for lunch
11:05 AM fragalot: or for drainage
11:05 AM pfred1: donno
11:05 AM pfred1: JT-Shop scramble up one of them chickens
11:05 AM pfred1: tastes just like chicken!
11:06 AM fragalot: my mailbox is absolutely flooded with ebay emails as far as the wheel can scroll...
11:06 AM pfred1: that's annoying
11:07 AM pfred1: aliexpress sent me an email they claim my order is still coming
11:07 AM fragalot: what's more annoying is the amount of money involved, lol
11:07 AM pfred1: I had given up hope of ever seeing the item
11:07 AM fragalot: what's the item?
11:08 AM pfred1: a CPU
11:08 AM fragalot: a high quality super fast intel one? :P
11:08 AM fragalot: secure*
11:08 AM pfred1: I donno how high quility is it is going to be I'll have to get back to you on that note
11:08 AM pfred1: it is used
11:09 AM pfred1: scrattered parts
11:09 AM pfred1: they're a lot cheaper from china than folks sell them here
11:10 AM pfred1: but man what a wait
11:10 AM gloops: how long pfred?
11:10 AM pfred1: I ordred it on November 20th
11:11 AM gloops: probably delays over xmas, be here any day
11:11 AM pfred1: I ordered a mtherboard same day that showed up like a month ago
11:12 AM pfred1: ain't gonna be here today
11:12 AM gloops: never seem to get a working tracking number with stuff ive ordered from china
11:12 AM pfred1: yeah no it just says it is in destination country
11:12 AM pfred1: that could mean it is 3,000 miles away
11:13 AM pfred1: I need a PC better than this one bad
11:14 AM pfred1: when I try to do a polar pattern in FreeCAD I can go brew a pot of cofee before it finishes
11:17 AM gloops: hmm does seem a bit slow
11:17 AM gloops: or maybe your coffee maker is slow
11:17 AM gloops: i mean fast lol
11:18 AM pfred1: maybe a bit of both there Forrest
11:18 AM pfred1: still this PC is old
11:18 AM gloops: i manage to run most 3 apps on 18 0 blob machines
11:18 AM pfred1: not that the one I'm building is going to be brand spanking new
11:19 AM pfred1: a few generations newer than this one though
11:19 AM gloops: 3d apps, blender can daudle a bit, the thing that really isnt good is generating g code for large objects
11:19 AM pfred1: I hear that
11:19 AM pfred1: I'm going to run onboard graphics see how it is
11:20 AM pfred1: video adapters are out of sight because of miners these days
11:22 AM JT-Shop: pfred1: I'm about ready to change Henry's name to Coq au Vin
11:25 AM `Wolf: well this should keep me busy for a while https://i.imgur.com/PhftEBY.jpg https://i.imgur.com/GyxdNkC.jpg
11:26 AM fragalot: `Wolf: should be fun :-)
11:28 AM IchGucksLive: rain in mass
11:29 AM fragalot: Right i might have finally found a supplier for cast tooling plate >.< who thoguht thi spart would be difficult
11:30 AM `Wolf: I don’t know about it being fun lol looks like it might be a total pain in the ass on the mill and the lathe for 2 out of 3 axis on each
11:30 AM fragalot: at least.. they say they carry tooling plate. no idea if they want to sell to "a nobody" >.>
11:32 AM IchGucksLive: fragalot: i am a nobody building 100+ mashines a year
11:32 AM IchGucksLive: sometimes its hard to belive
11:32 AM fragalot: but do you have a VAT number?
11:33 AM IchGucksLive: i only build no sale
11:33 AM fragalot: because that's the most frequent answer I get "we don't sell directly to end-users"
11:33 AM fragalot: at least, in my region
11:38 AM gloops: whats the code for tooling plate now - starts with MIC is it? or CIG
11:39 AM fragalot: MIC I believe
11:39 AM fragalot: most places i've found seem to have their own proprietary name for it though like "salplan 5000"
11:41 AM gloops: yeah
11:41 AM gloops: i will change mine for 20mm tool plate when im overwhelmed with orders
11:42 AM fragalot: they also have it in 150mm for the bed
11:42 AM fragalot: :P
11:42 AM fragalot: base*
11:47 AM gloops: think ill pass on 1100x900x150 heh
11:47 AM IchGucksLive: gloops: your basement plate will break on mashine waight
11:48 AM IchGucksLive: house gone shake on G0
11:48 AM IchGucksLive: and naibours will think on Vibrations
11:48 AM * fragalot used to have his lathe in the attic
11:49 AM fragalot: that was a stupid idea to carry a 300kg lathe up the stairs
11:50 AM IchGucksLive: makes sence as cheeps fall Fg
11:50 AM IchGucksLive: 9.81 :P
11:52 AM fragalot: it did indeed come down faster than it went up, lol
11:54 AM pfred1: I don't have an attic
11:54 AM IchGucksLive: pfred1: only the High millers do
11:54 AM IchGucksLive: ordanary chees got a Basement
11:55 AM pfred1: thee's a space under the roof but there's no floor on the joists
11:55 AM pfred1: plus it gets hotter than hell up there in the summer
11:55 AM pfred1: like you're not making it 5 minutes hot
11:55 AM IchGucksLive: ned isolaton on roof tiles
11:56 AM IchGucksLive: th US prefers Bitumen
11:56 AM IchGucksLive: sen in the catskill mountons
11:56 AM IchGucksLive: and now they got -20degC
11:56 AM IchGucksLive: without iso
11:57 AM pfred1: its been cold here this year
11:57 AM IchGucksLive: and lots of snow in forcast
11:57 AM pfred1: there's insulation from the living area
11:57 AM pfred1: like snow don't melt off my roof
11:57 AM IchGucksLive: we got the hotest year change since weather report in 1881
11:58 AM IchGucksLive: i got nice glased roof tiles
11:58 AM IchGucksLive: it simply glides of and i got sunpower
11:58 AM IchGucksLive: heading in winter
11:58 AM pfred1: no sun this time of year
11:58 AM IchGucksLive: agre
11:59 AM IchGucksLive: waterlevels are rising quickly
11:59 AM pfred1: sun don't make it over the trees
11:59 AM IchGucksLive: we bearly made it to view points this morning to look at fallen trees
11:59 AM fragalot: IchGucksLive: I have no basement; though I do currently have an indoor pool that has some food stuffs floating in it
12:00 PM IchGucksLive: fragalot: and where are the ladys
12:00 PM pfred1: yeah we just have crawlspaces water table is too high
12:00 PM fragalot: IchGucksLive: at your place
12:00 PM IchGucksLive: agree
12:00 PM IchGucksLive: 250 at the time in center
12:01 PM fragalot: Right. let's see if I can install inuxcnc on this 12yr old beast of a Shuttle
12:02 PM pfred1: I hope you're not using the original PSU
12:02 PM fragalot: I think I replaced it 6 years ago
12:02 PM pfred1: that's borderline
12:02 PM IchGucksLive: thats the viewpoint https://www.youtube.com/results?search_query=luitpoldturm
12:03 PM pfred1: I like to change them out every 5 years myself
12:04 PM pfred1: well I'm off to try to dig to my birdfeeder
12:04 PM fragalot: good luck
12:04 PM pfred1: thanks
12:05 PM IchGucksLive: thegreen hell im living in https://www.youtube.com/watch?v=HUC3Jaq-C7U
12:06 PM IchGucksLive: at 2-30 view from top
12:06 PM IchGucksLive: there are weddings up there and a chapel below
12:06 PM IchGucksLive: in summer around 1000 people a day and 100 at night
12:08 PM IchGucksLive: drone view https://www.youtube.com/watch?v=sCdFU8qIyo4
12:09 PM miss0r: oh noed ! I managed to put some runout into my EDM spindle, while I was heating the ER11 head on the shaft :-/
12:10 PM IchGucksLive: there is a 267km straiht bike way that meeds no hose
12:10 PM miss0r: 0.04mm radial runout right at the spindle nose... DAMN !!!
12:11 PM IchGucksLive: that sounds at 24k rpm
12:11 PM IchGucksLive: so you got always a free tool
12:12 PM miss0r: hehe. its only 7-10rpm... but that is still quite unusable, when you put a 300mm long brass rod in there. ALOT of runout at the end of that :D
12:13 PM IchGucksLive: why that long without support
12:13 PM fragalot: hooray the shuttle still boots
12:13 PM miss0r: I think i'll order one of thoes ER11 holders with a shaft on there, and machine it
12:13 PM miss0r: IchGucksLive: I could add support somewhere along that length, but it would still move about
12:13 PM IchGucksLive: it came yesterday the 100mm ER11 c8
12:14 PM miss0r: Hehe, I'm looking at something simular right now :]
12:15 PM miss0r: I'll grind it down to 7mm diameter between centers. That should do the trick. Also, I'll need to drill all the way through it, to let the coolant flow through
12:15 PM IchGucksLive: i woudt go to a nearby edm
12:15 PM IchGucksLive: so it can do a edm drill
12:16 PM IchGucksLive: takes about 1min for 100mm at 0,8mm
12:16 PM miss0r: well, I need a 4mm diameter hole through there, I should be able to drill that with a long carbide drill
12:16 PM fragalot: have you guys seen that "supreme skills" show from japan?
12:16 PM IchGucksLive: edm center start drill
12:16 PM fragalot: one of the challenges was to drill a 0.3mm hole in a 0.5mm pencil lead
12:16 PM miss0r: fragalot: yeah.
12:17 PM miss0r: IchGucksLive did you see the photo I posted of the edm spindle I made?
12:17 PM IchGucksLive: if you lok at that is sams a ordanary 1,5mm pencil and a 1mm bit
12:17 PM fragalot: IchGucksLive: it really isn't
12:17 PM fragalot: you have to drill the whole length of it
12:19 PM miss0r: 21 custom parts in this bad boy... Too bad the runout sucked: https://imgur.com/a/V3e7z
12:25 PM fragalot: ha I forgot I had 3TB of storage in this thing
12:25 PM IchGucksLive: https://www.youtube.com/watch?v=aNeNVa3O_GM
12:27 PM fragalot: 1:00 - -that looks like a lot more runout than 0.04mm
12:29 PM IchGucksLive: so folks i got it SOLVED NOW Freecad is Simulating G81-G83 https://www.youtube.com/watch?v=0NJmoLY4vYk
12:29 PM miss0r: Yes, but that looks like it is in the electrode, not the spindle
12:29 PM IchGucksLive: did make a commmit last m inute
12:29 PM IchGucksLive: lets see if and when it is accepted
12:30 PM IchGucksLive: i also did include a tool shape sim but did not commit that
12:31 PM IchGucksLive: and modified the linuxcnc post if this will ever been accepted i dont think archivist
12:37 PM Connor: Is it common to space out, or use end blocks on as spacers to separate out phases / neutral ? Setting up my DIN rail.. I'll have 5 L1's, 5 L2's, 5 neutrals, and then ground blocks.. I have a bunch of end blocks I can put between them to space them out..
12:38 PM fragalot: not in europe
12:38 PM roycroft: i don't know if it's common, but i use end blocks to separate different power buses on the same din rail
12:38 PM fragalot: oh like that, yeah
12:39 PM fragalot: I thought you meant L<space>L<space>N<space> :P
12:39 PM roycroft: i like to color code them as well
12:39 PM Connor: | L1 | L2 | N | Ground |
12:40 PM Connor: The | are the end blocks that lock down to the DIN.
12:42 PM Connor: Instead of using outlets.. I'm just going to hardwire the DRO and power feeds straight into the VFD enclosure..
12:47 PM roycroft: today is laminate day after work
12:47 PM roycroft: i'm looking forward to its being done
12:47 PM roycroft: i'm dreading doing it though
12:51 PM Nick-Shop_ is now known as Nick-Shop
12:52 PM pfred1: I'm dreading shoveling snow
12:53 PM pfred1: I'm getting too old for this shit
12:57 PM Nick-Shop_ is now known as Nick-Shop
01:02 PM Nick-Shop_ is now known as Nick-Shop
01:04 PM fragalot: turns out it's helpful if you create a /boot partition :D
01:04 PM pfred1: how so?
01:05 PM pfred1: mzybe back when there was a cylinder limit
01:05 PM fragalot: because it didn't boot when I hadn't
01:06 PM pfred1: used to be the MBR had to be in the first 1024 cylinders
01:06 PM pfred1: but that hasn't been a thing in a long time
01:07 PM fragalot: well something went wrong, yet now it works
01:09 PM pfred1: I just have a root and a home partition
01:10 PM fragalot: doesn't really matter to me on this machine
01:10 PM fragalot: it's been sitting idle for 6 years, it's going to be dedicated to the mill
01:11 PM pfred1: I've run out of room with a bunch of kernels and a small partition
01:12 PM pfred1: I had to run gpartd on this system because my root got tight on me
01:12 PM pfred1: that was a pain
01:27 PM MrHindsight: https://i.imgur.com/FKDRmib.gifv jet engine assembly
01:32 PM synfinatic: gotta love people who know how to properly safety wire a bolt
01:33 PM MrHindsight: heh, thats the part of the video that stood out to me first
01:55 PM fragalot: synfinatic: you have to love people that know how to do it blind shoulder with their arms stretched inside of those engines
01:56 PM synfinatic: at least they have those fancy pre-drilled bolts. drilling your own is a PITA
01:57 PM synfinatic: bought some Ti pre-drilled caliper bolts for my race bike. Best $75 I've ever spent. LOL
01:57 PM fragalot: I've always wondered about those predrilled ones
01:57 PM fragalot: do you just... ignore the torque spec to make it line up, or do you put shims in
01:58 PM synfinatic: all faces are drilled. so there's always a hole
01:59 PM jdh: what bike
01:59 PM synfinatic: oh that's a semi long story. tl;dr: custom. Ducati 1098S frame/suspension w/ a Suzuki SV650 motor
02:08 PM ziper: that video is way too long to be a gifv
02:09 PM fragalot: ziper: would you rather they do that annoying thing where it's split up into 4 gifs that play at the same time so you sit there waiting for the next one to loop 'round?
02:09 PM ziper: i'd rather have a real video
02:09 PM fragalot: click the YT link then :P
02:10 PM fragalot: also, right-click "show controls"
02:23 PM xr: hello, I have a 2 motor y axis cnc. I have configured 2 sets of step and direction pins but when I test the axis only one motor turns. Switched cables other motor runs. dropped running pins to unused and the non moving motor starts to run... Software only toggles one motor for some reason. Any ideas? I've checked and it seems I'm configuring correctly...
02:25 PM xr is now known as mojo-risin1
02:29 PM andypugh: “Test Axis” might not know how to test a gantry layout
02:29 PM andypugh: mojo-risin1: Which version of LinuxCNC are you using?
02:29 PM mojo-risin1: 2.7
02:30 PM andypugh: You might prefer 2.8 for a gantry machine. (ie the development version)
02:30 PM mojo-risin1: I'll try to move it in the regular console.
02:30 PM mojo-risin1: I did read that about 2.8
02:32 PM mojo-risin1: I saw some youtube vids where they use 2.7 or possibly earlier but they don't test in the config wizzard...
02:32 PM mojo-risin1: machine is downstairs going to test...
02:32 PM mojo-risin1: thanks
02:44 PM mojo-risin1: Ran it in App and both turned. Thanks!
03:04 PM Rab: Hi all! I want to experiment with thread milling in cast polycarbonate using this tool. Any opinions on climb vs. conventional milling? https://smile.amazon.com/gp/product/B00Q8M40TG/
03:06 PM fragalot: climb
03:07 PM Rab: I imagine it's designed for use in a lathe, but I intend to chuck it in a spindle. The shank is 3/8" (not 3/4" as Amazon.com claims), but if I cut the shank off the body is 6mm dia.
03:08 PM Rab: fragalot, thanks, I was leaning that direction.
03:09 PM fragalot: the relief cuts on it may need some modification if it rubs
03:10 PM fragalot: in fact, i'm not convinced that a lathe threading tool's shape is compatible with thread milling.. I imagine the angle would need to change
03:11 PM Rab: A helical path would requre a smaller angle, correct?
03:12 PM Rab: To produce e.g. an ideal 60-degree thread angle in the workpiece.
03:12 PM fragalot: yeah, i'm just not sure how much
03:13 PM * fragalot goes to grab a catalog to see if it's mentioned
03:13 PM Rab: This would be a 3/4-14 thread, incidentally.
03:15 PM skunkworks: I don
03:16 PM skunkworks: hmm I don't know if that will do what you want. I think the back of the tool will touch before the cutter does... Unless you install it in a boring head and offset it...
03:17 PM fragalot: skunkworks: he's plannig to cut it in half
03:17 PM Rab: skunkworks, I think I'll have to cut the shank off.
03:17 PM skunkworks: ah
03:17 PM fragalot: my catalogs don't mention the actual cutter angles
03:18 PM JT-Shop: skunkworks: is there any special order to loadrt the components for your torch control?
03:18 PM fragalot: and i'm nowhere naer the little machinists' bible
03:18 PM skunkworks: yes
03:18 PM skunkworks: JT-Shop, what do you have?
03:19 PM skunkworks: I will be at the shop tonight - you going to be around?
03:19 PM JT-Shop: nothing yet, been super busy
03:19 PM skunkworks: ah - ok
03:19 PM JT-Shop: I should be in and out
03:19 PM JT-Shop: grandkids and kids arriving sometime tonight
03:20 PM skunkworks: nice!
03:21 PM skunkworks: Thread order is very important. Expecially for the offset component
03:21 PM JT-Shop: I thought it might be
03:36 PM MrHindsight: https://chicago.craigslist.org/nwc/hvo/d/ycm-miller-cnc-mills/6422845336.html
03:36 PM MrHindsight: found these yesterday $1k ea , has 4 for sale
03:37 PM fragalot: bulk buy, lol
03:37 PM fragalot: if he's got 4, why is one labeled 5?
03:37 PM fragalot: lies.
03:38 PM MrHindsight: https://chicago.craigslist.org/nwc/hvo/d/hyundai-cnc-lathe-hit18/6441950016.html still up for $1500
03:39 PM Rab: MrHindsight, haunted, don't do it.
03:40 PM MrHindsight: haha
03:40 PM MrHindsight: what I now use for the reason I return any item
03:40 PM MrHindsight: and you are returning these pants because? Haunted.
03:42 PM fragalot: and the hand? because it's not haunted.
03:44 PM Rab: MrHindsight, I'm interested to hear about your plans for your linear servos. I have a set of large Parker linears, 400LXR in 1m and 1.5m IIRC.
03:44 PM Rab: Do you have a set of suitable drives?
03:44 PM MrHindsight: Rab: I use them all the time
03:45 PM MrHindsight: I use linear servos for inkjets and other additive type applications
03:45 PM Rab: ahh
03:45 PM MrHindsight: I have to finish off a lathe with linear servos and an air bearing spindle
03:46 PM fragalot: I didn't know air bearings could support heavy loads
03:46 PM MrHindsight: https://imagebin.ca/v/2TZ69LKPSZ6P linear servos for X and Y
03:46 PM Rab: I had a plan to drive two servos in parallel to support a gantry, one on each side...do you see any reason why they can't be synchronized like that?
03:47 PM MrHindsight: as seen in the pic I had two tied together side by side to increase capacity
03:48 PM Rab: Cool. And I guess that's a more conventional ballscrew-driven stage for the Z axis?
03:48 PM MrHindsight: if they are very rigidly tied to each other then they only require one encoder
03:48 PM Deejay: gn8
03:49 PM MrHindsight: Rab: yeah, that was like a 2mm pitch ballscrew Z with servo motor
03:51 PM Rab: Is there any form of e-stop braking? I guess if the drive loses power while the slide is in motion, it's free to continue to the end of travel?
03:52 PM MrHindsight: you can add brakes
03:52 PM MrHindsight: these have big springs at the end of the travels
03:52 PM MrHindsight: a brake is a must for a linear servo Z
03:53 PM MrHindsight: fragalot: depends on how much area x pressure vs load
03:54 PM fragalot: MrHindsight: yeah i'm reading a whitepaper on them right now & found the "typical" load graph/diameter
03:54 PM fragalot: they take a lot more than I expected
03:56 PM MrHindsight: https://www.youtube.com/watch?v=fc0eIU5pq28 Air bearing spindle with 1000 pound load
03:57 PM MrHindsight: https://www.youtube.com/watch?v=-Oi4_NNH0EU crash testing air bearing spindle
03:58 PM MrHindsight: you might have already seen this https://www.youtube.com/watch?v=sFrVdoOhu1Q
03:58 PM MrHindsight: Dan Gelbart air bearing CNC lathe and grinder
03:59 PM fragalot: speaking of air. just remembered I still need to get a piston to balance the Z axis
04:00 PM MrHindsight: he could have used LCNC!
04:02 PM fragalot: That is a beautiful machine.
04:04 PM MrHindsight: I wonder if there is a Tormach size market for those
04:04 PM MrHindsight: say it was $10k + shipping
04:04 PM fragalot: his machine looks tormach sized..
04:05 PM fragalot: oh price.. :P
04:05 PM fragalot: could you make that for 10k with that high accuracy?
04:06 PM fragalot: let alone sell it for 10k
04:06 PM MrHindsight: the base and slides polymer concrete
04:08 PM MrHindsight: if you can semi automate making square and flat polymer concrete parts
04:10 PM MrHindsight: or get elves to do it manually
04:10 PM fragalot: depends on how large they are. I've installed some equiptment of ours in plants making larger concrete slabs and the amount of problems with fully automating that type of thing is incredible
04:10 PM MrHindsight: I make resins and composites
04:10 PM fragalot: unless if you oversize cast them & grind them down later, similar to making synthetic surface plates
04:10 PM MrHindsight: i was looking at DIY ways to make it a kit
04:11 PM MrHindsight: but I don't it's easy enough for most to DIY it even as a kit
04:11 PM pfred1: scrape resin
04:12 PM fragalot: MrHindsight: so you're the one I should annoy to get good information to help me cast an epoxy granite base for my new mill? :D
04:12 PM MrHindsight: you cast in metal supports
04:12 PM fragalot: that's the obvious part, i'm looking more for the lesser known details
04:12 PM MrHindsight: you drill and tap for fasteners
04:13 PM MrHindsight: fragalot: there's a multi year thread on polymer concrete/granite machines
04:13 PM fragalot: that's the problem
04:13 PM fragalot: multi-year threads are a pain in the rear
04:14 PM MrHindsight: <rimshot>
04:14 PM MrHindsight: http://www.cnczone.com/forums/epoxy-granite/30155-epoxy-granite-machine-bases-polymer-concrete-frame.html
04:14 PM fragalot: 900 pages of which 800 are useless filler content, 60 are obsolete or incorrect, and the remaining 40 need to all be read in the right order to be able to do it right
04:15 PM MrHindsight: it basically comes down to ~10:1 aggregate to polymer
04:15 PM fragalot: like the dutch "cnczone" opensource build.. the build documentation is just a huge thread as described above, except there is only 1 post in the entire thread, somewhere in the middle
04:15 PM fragalot: with a broken link to a BOM.
04:15 PM fragalot: and a grabcad page stating it needs updating :P
04:16 PM MrHindsight: https://ibin.co/2eWjnYtOrXq9.jpg
04:17 PM MrHindsight: http://www.mech.utah.edu/~me7960/lectures/Topic14-DesignOfMachineStructures.pdf
04:17 PM fragalot: big honking vibrator or bust, it seems.. There goes my original plan.
04:20 PM MrHindsight: if you need resin let me know
04:20 PM MrHindsight: I found a nearby quarry with nice aggregate, already washed and sorted
04:21 PM MrHindsight: BYO-BAT though
04:21 PM MrHindsight: big ass truck,, they sell by the truck load
04:21 PM fragalot: truck load would take a while to get to europe from the USA
04:22 PM MrHindsight: I'm sure they have granite dust and gravel there
04:22 PM fragalot: :D
04:22 PM MrHindsight: aren't the Alps mostly granite?
04:23 PM fragalot: I could grind up some coticules :P
04:23 PM `Wolf: hmm crap, DRO is going to cover the oil ports on my X axis…
04:23 PM `Wolf: guess I need to upgrade this mill to one shot oiling lol
04:23 PM MrHindsight: look for the series online: Precision Machine. Design. Alexander H. Slocum from MIT
04:23 PM fragalot: `Wolf: I had that same issue with mine.. Wound up moving the ports
04:23 PM fragalot: MrHindsight: Will do
04:24 PM `Wolf: yeah, trying to figure out if I should drill the ports in higher
04:25 PM MrHindsight: https://pdfs.semanticscholar.org/6bfd/7b7b84c01086ba7d8a03d9acd2bc16a56973.pdf
04:25 PM MrHindsight: fragalot: ^^ also
04:26 PM fragalot: interesting, but I already purchased the linear slides
04:27 PM fragalot: Anywya, i'm off to bed.. Ttyl! :)
04:28 PM `Wolf: why do I have this bad feeling that the oil ports on this thing line up with in inside of the t slots lol
04:34 PM Nick-Shop_ is now known as Nick-Shop
04:38 PM MrHindsight: https://youtu.be/cwdoUjynpEk?t=2m4s "wear drops to zero on flat surfaces"
04:49 PM gloops: might not believe it but ive actually found box section steel from the scrapyeard to be as flat or even flatter than aluminium extrusion, perhaps not over micro distances but certainly over larger spans
04:54 PM jesseg: so guys.. Would I be insane to try and rewind a small single phase capacitor start induction motor? :P
04:54 PM roycroft: i don't know - is your expectation that you would succeed at it?
04:54 PM jesseg: LOL maybe.
04:55 PM roycroft: then it may be insane
04:55 PM jesseg: I'd always assumed a shorted out induction motor was a lost cause
04:55 PM jesseg: but now I've seen an Indian language you tube video where they show some of it, and I guess there's a procedure for it
04:55 PM roycroft: primarily i think it's just not worth the time, unless you're looking at it as an educational experience
04:56 PM jesseg: yeah part educational, partly to save an old lab vacuum pump I like :P
04:57 PM gloops: why not, some people spin their own wool from cat hair
04:57 PM jesseg: I did a little of that when I had a cat that made the right kind of hair :P
04:58 PM roycroft: it is time to go deal with plastic laminate
04:58 PM * roycroft is going to be unhappy for a while
05:04 PM Rab: jesseg, if the motor burned out, maybe the pump is seizing?
05:04 PM gloops: well not everything is done out of a sense of monetary value jesseg, i keep a load of old junk tools really, would be far better with newer ones, but i like them
05:04 PM jesseg: Rab, the pump doesn't seem to be. I took off the winding and the inner part turns free.
05:05 PM jesseg: Rab, and in fact the unit does run, but only while the start relay is engaged, and it draws way too much current.
05:05 PM jesseg: sometimes it'll run for a little while without the start circuit but not usually
05:05 PM Rab: How modular is the assembly? I'd look at coupling another motor.
05:07 PM jesseg: the motor shaft goes into the pump and is the center shaft for the gear pump
05:07 PM jesseg: but yeah with sufficient maching work it could be done.
05:07 PM jesseg: or I could just retrofit it to take a pulley :P
05:09 PM jesseg: but just a charming idea it is to actually rewind the motor.
05:11 PM jesseg: Wow... Grundfos water well pump motors are hand wound with such care.. I guess they are supposed to last a very long time
05:11 PM jesseg: automotive alternators on the other hand, are machine wound and the wire is put through great stress during assembly
05:12 PM jesseg: or I could just throw out the dear old pump :P
05:12 PM Rab: There's an interesting video of Tesla drive motor assembly. Largely automated, with some human interaction.
05:13 PM MrHindsight: Rab: are there any coils?
05:14 PM Rab: MrHindsight, I believe so.
05:14 PM MrHindsight: https://www.youtube.com/watch?v=v66vBb1FK2k 61 seconds
05:16 PM MrHindsight: waiting to see the first video or a sexbot operating a machine, so that it becomes a business expense
05:16 PM MrHindsight: or/of
05:48 PM jesseg: LOL... and... if I re-wind it, I could rewind it for 3 phase 12 volt operation HA HA
05:48 PM jesseg: a lot less turns to worry about
06:02 PM jesseg: I guess it would be most simple to just turn an adapter ring to mount another motor on it or whatnot.
06:03 PM jesseg: or just throw it away and buy a new pump :P
06:15 PM gloops: copper is £3.50 a kilo at scrapyard
06:21 PM gloops: scrap household electricals have quite a bit of copper inside, not many bother trying to retrieve it though
06:23 PM MrHindsight: thats like $2.16/lb
06:23 PM skunkworks_: we have found a large bandsaw works well for cutting copper out :)
06:24 PM MrHindsight: skunkworks_: from motors?
06:24 PM gloops: so the big scrap yard takes in the old washing machines and microwaves as mixed scrap, the lowest price of all 3-5 pence a kilo
06:24 PM skunkworks_: yes :)
06:24 PM gloops: he cant lose
06:25 PM sync: yeah you just cut the winding head off and then pull everything out
06:25 PM MrHindsight: https://www.amazon.com/dp/B01CZUEY6I/ref=asc_df_B01CZUEY6I5325290
06:25 PM gloops: can do it with angle grinder, rip one end off the rest pulls through
06:25 PM MrHindsight: Automatic Wire Stripping Machine Electric Copper Stripper
06:26 PM MrHindsight: Stripping speed: Approx. 50 feet per minute
06:26 PM gloops: thats not a bad rate
06:26 PM skunkworks_: sync, yes
06:26 PM sync: an angle grinder is not as fast as a bandsaw
06:27 PM sync: I repaired the scrapyards bandwas just for that
06:27 PM MrHindsight: if it has insulation on it they always offer way less
06:27 PM skunkworks_: we have some 20-30 hp motors we need to get rid of. Copper is down now though
06:27 PM sync: yeah, scrapping stuff for copper is not really worth it now
06:27 PM MrHindsight: the Chinese stopped buying our scrap
06:27 PM MarcelineVQ: MrHindsight: even just the oxide will have some yards bump it down a grade :(
06:27 PM gloops: burnt off is less yes
06:28 PM MrHindsight: MarcelineVQ: until you want to buy it then it's high grade :)
06:28 PM MarcelineVQ: certainly solder bumps it down despite affecting nothing in the reprocessing effort, afaik
06:28 PM MarcelineVQ: solder on pipes I ​mean, where it doesn't really affect the weight
06:28 PM skunkworks_: so - instead of getting cancer smoking - people are loosing teeth when their vapes blow up.
06:28 PM MrHindsight: worst was when I called ahead to get a price and then it changed when I arrived
06:28 PM MrHindsight: I found most to be pretty scummy
06:29 PM MrHindsight: get a price before you unload
06:29 PM gloops: lol
06:29 PM gloops: id think thats a very common experience
06:29 PM MarcelineVQ: worse is that the outfits in any given area tend to be all owed by the same parent these days
06:30 PM MarcelineVQ: so you don't even have options really
06:30 PM skunkworks_: we have had pretty good luck with the local recycler. so far
06:31 PM MarcelineVQ: I've got some 15lbs of braided de-insulated copper wire sitting in my shelf that I've got to decide if I want to use for fun or get rid of
06:32 PM MarcelineVQ: fun being things like making copper sulphate crystals, or experimenting with electrolosis, etc
06:32 PM MarcelineVQ: *electrolosis/plating
06:33 PM gloops: lot of allegations of rigged scales here, magnets on the scales etc, quick to remove if the authorities come round, the scrapyards dont like it if you melt the metal down into ingots yourself though - could easily be concealing bars of cheaper metal, they have a lot of stunts pulled on them too
06:37 PM MarcelineVQ: it's their business to rig the scale :>
06:38 PM MarcelineVQ: Otherwise they'd lose money spending their time dealing with small fry
06:39 PM MrHindsight: just bring a set of bar bells along for reference
06:39 PM MarcelineVQ: It's awful but that's the reality of that business model, "if you're gonna waste my employees time I'm gonna make money off you" You can bet the commercial units driving in aren't getting screwed, in the same way
06:40 PM MrHindsight: I demand that they weight and displacement
06:40 PM MrHindsight: check both
06:41 PM MrHindsight: isn't aluminum swarf also another reson to lower the buy price?
06:41 PM MrHindsight: you might be hiding steel in there
06:44 PM MarcelineVQ: you might be, unless it's stainless though there's easy ways to be sure
06:45 PM MarcelineVQ: But it's more profitable just to lower the buy price as you're saying
06:56 PM ziper: is it hard to make a diesel injector
06:57 PM skunkworks_: probably harder to make the injector pump...
06:57 PM ziper: yeah
07:01 PM MrHindsight: ziper: often on ebay for ~$100
07:01 PM MrHindsight: depends on type
07:01 PM ziper: I don't need one, just curious
07:02 PM MrHindsight: lots of cut-away pics and drawings online
07:03 PM codepython777: MrHindsight: how did you make your machine to convert pellets to filaments - any pictures? :)
07:04 PM MrHindsight: codepython777: I had a large extruder
07:04 PM codepython777: how good is the consistency/dimensional accuracy of the extrude?
07:06 PM MrHindsight: http://www.rbplasticsmachinery.com/images/New-Extruder-3-5-inch-24-to-1-max-extruder-big.jpg was similar
07:06 PM MrHindsight: was pretty much dead on <0.1% variance
07:08 PM codepython777: wow!
07:08 PM codepython777: MrHindsight: how much does that thing cost?
07:08 PM MrHindsight: http://www.clextral.com/files/2013/06/2-Vis-215x300.jpg mine had twin screws
07:09 PM codepython777: seems like for large jobs only?
07:09 PM MrHindsight: the heaters on the barrel are just for consistency, the majority of the heat is through friction and compressing the pellets between the screws inside the barrel
07:10 PM MrHindsight: https://www.youtube.com/watch?v=WMxlunR1LC0
07:11 PM MrHindsight: https://youtu.be/jFMzrsB5VrY?t=1m16s
07:13 PM MrHindsight: you can find used ones that work well for a few $K
07:14 PM MrHindsight: https://youtu.be/F7v2dvDn-OM?t=49s
07:17 PM MrHindsight: they have small lab size versions https://www.youtube.com/watch?v=e8xidunCXFo
07:28 PM codepython777: MrHindsight: how much do these cost - any ideas?
07:28 PM MrHindsight: https://www.ebay.com/itm/AL-BE-Filament-Plastic-Extruder-With-IMS-Material-Loader-and-Water-cool-tub/273009147258
07:29 PM pfred1: people make extruders with auger bits
07:30 PM MrHindsight: yeah, the hackey versions for ~$500
07:30 PM pfred1: ones I've seen look more like the $50 variety to me
07:30 PM codepython777: pfred1: with $50 you can do dimensioned extrusion?
07:31 PM pfred1: windshield washer motors and what have you
07:32 PM MrHindsight: https://www.ebay.com/itm/Filament-Extruder-V5/302116598076 $600
07:33 PM MrHindsight: I can't imagine how consistent the filament is from that ^
07:33 PM pfred1: how much can you save?
07:34 PM codepython777: MrHindsight: that looks like a very good price though
07:34 PM pfred1: codepython777 you can make something like that for $50
07:34 PM pfred1: might not look as nice
07:34 PM codepython777: pfred1: how?
07:34 PM pfred1: but it'll be the same hting
07:35 PM pfred1: it probably just has an auger bit in a piece of pipe under that insulation
07:36 PM pfred1: then there's a heat collar on the pipe
07:39 PM MrHindsight: they are the equivalent of these as milling machines https://www.northerntool.com/shop/tools/product_200419823_200419823
07:39 PM codepython777: MrHindsight: that filamake is $499 euro new on their website
07:40 PM codepython777: MrHindsight: how are they equivalent
07:40 PM pfred1: MrHindsight that looks like a cute little mill
07:41 PM pfred1: really little
07:42 PM codepython777: pfred1: how is that equivalent?
07:42 PM pfred1: codepython777 I don't know
07:43 PM pfred1: I think i might have the drill press version of that mill
07:44 PM codepython777: pfred1: do you extrude yourself by any chance?
07:44 PM codepython777: pellet to filament
07:44 PM pfred1: http://i.imgur.com/NJ9GP2N.jpg
07:45 PM pfred1: codepython777 no I bake HDPE though
07:45 PM pfred1: I have to cook a batch
07:45 PM pfred1: I got loads of bottles saved up
07:46 PM pfred1: http://i.imgur.com/MogRQ2i.jpg
07:46 PM codepython777: what do you use those for?
07:46 PM pfred1: all kinds of stuff
07:47 PM pfred1: I just use it as prototyping stock
07:47 PM pfred1: heck my CNC lead nuts are made out of it
07:47 PM pfred1: it's elastic so no backlash
07:48 PM pfred1: for a while my Z axis was made out of it
07:48 PM codepython777: pfred1: do you cut it on your cnc?
07:48 PM pfred1: sometimes
07:48 PM pfred1: http://i.imgur.com/lSsNyBG.jpg
07:48 PM pfred1: that I cut on my manual mill
07:49 PM pfred1: I ha problems with the plywood expanding and contracting with that axis
07:49 PM pfred1: but sometimes it worked pretty good
07:51 PM pfred1: so then I made this http://i.imgur.com/eBfoT6s.jpg
07:51 PM codepython777: pfred1: is that safe to do in a kitchen?
07:51 PM pfred1: but that had some issues too
07:51 PM pfred1: yeah if you don't go too high heat it makes no fumes
07:51 PM pfred1: but if you burn it it can smell sickly sweet
07:52 PM pfred1: convection ovens work the best
07:52 PM pfred1: with convection you can melt fast with no burn
07:54 PM pfred1: here's a collet holder i made out of one of my HDPE blocks http://i.imgur.com/VSfkEiS.jpg
07:54 PM pfred1: it's handy stuff
07:55 PM Tom_L: what do you melt it in?
07:55 PM Tom_L: an old pan?
07:55 PM pfred1: I have a toaster oven I use
07:55 PM pfred1: oh yeah the box
07:55 PM pfred1: I got a pic somplace sec while I find the link
07:56 PM Tom_L: i've got a toaster oven but it's been modified for SMT soldering
07:56 PM pfred1: http://i.imgur.com/RpqLjJq.jpg
07:56 PM pfred1: convestion really helps i started out with a plain oven
07:56 PM pfred1: convection even
07:57 PM pfred1: but I scored a convection toaster oven at a yard sale for $5
07:57 PM Tom_L: so you just fill that and put it in the oven with the lid on it
07:57 PM Tom_L: and it melts into a brick
07:57 PM pfred1: erally all it is is a box on the side of the oven with a fan in it
07:57 PM pfred1: I use the lid as a caul after I pop the box out of the oven to compress the brick
07:58 PM pfred1: how you squeeze is one of the technoques to getting it to work
07:58 PM pfred1: HDPE shrinks a lot as it cools
07:59 PM pfred1: look at the block on the lower right http://i.imgur.com/boPwUiN.jpg
07:59 PM pfred1: that block I didn't squeeze
07:59 PM pfred1: the oth problem is while you squeeze you build up intrnal stresses in the material
07:59 PM MrHindsight: https://www.harborfreight.com/plastic-welding-kit-with-air-motor-and-temperature-adjustment-96712.html
08:00 PM pfred1: that's why my one dovetail didn't work
08:00 PM pfred1: it curled when I machined it
08:01 PM codepython777: pfred1: once you make them, can you shape them well using your cnc?
08:01 PM pfred1: I never figured out how to fix the stress issue
08:01 PM pfred1: oh HDPE cuts liek a dream
08:01 PM pfred1: it is like fantasy material
08:01 PM codepython777: http://filamake.com/ - btw this is the extruder from ebay
08:02 PM codepython777: pfred1: glad to hear
08:02 PM pfred1: yeah HDPE has very nice machining properties
08:03 PM pfred1: LinuxCNC https://i.imgur.com/97JwhQF.jpg
08:04 PM pfred1: just engraving numbers in it
08:04 PM codepython777: pfred1: nice
08:05 PM pfred1: I just made a speaker bracket for the PC I'm building out of an offcut of my home baked HDPE
08:05 PM pfred1: dang case had no PC speaker in it
08:06 PM pfred1: if you make stuff blocks of HDPE are handy to have around in the shop
08:07 PM pfred1: you always find uses for it
08:07 PM codepython777: cool
08:11 PM pfred1: here I'm making snow out of it http://i.imgur.com/Mqsy43E.jpg
08:14 PM sync: pfred1: you can normalize plastics as well, but good cutting strategy will minimize distortion
08:14 PM pfred1: sync I took one of my blocks and remelted it
08:15 PM pfred1: then didn't clamp it
08:15 PM pfred1: but it really went crazy
08:15 PM pfred1: it had this big muffin top on it when it cooled
08:16 PM sync: remelting is not the way to go
08:16 PM pfred1: ah
08:16 PM pfred1: yeah I completely liquefied it again
08:16 PM sync: you need to be around the glass transition temp and keep it there for a few hours
08:16 PM pfred1: and you're right it wasn't the way to go at all
08:16 PM sync: and then cool it very gently
08:17 PM pfred1: I've heard about the slow cool method
08:18 PM pfred1: it's tricky I've yet to master the technique
08:19 PM sync: you just program a very slow ramp in your oven controller
08:19 PM sync: and wait
08:19 PM pfred1: yeah I don't think my oven does that
08:19 PM pfred1: I'd have to do it manually
08:20 PM pfred1: but that's what i heard cool it down in stages
08:20 PM pfred1: and it seems to take a lot of hours
08:21 PM sync: yeah you want an oven controller with ramp
08:22 PM sync: a cheap one will do
08:22 PM pfred1: for a lot of stuff the warp isn't a factor
08:23 PM pfred1: it was only when I tried to make those dovetail stages that it really got me
08:23 PM pfred1: those things had to be so close you know?
08:24 PM pfred1: I mean for manual use they work but they bound enough I couldn't get good speed with them with a stepper motor
08:25 PM pfred1: so they kind of sort of worked but not really
09:25 PM roycroft: the first piece of laminate is done
09:25 PM roycroft: yay!
09:25 PM roycroft: a couple more to go
09:25 PM MarcelineVQ: you did it!
09:25 PM roycroft: i knew i ould
09:25 PM roycroft: could
09:25 PM roycroft: it was a matter of will, not skill
09:26 PM roycroft: the bottom of my router table is made out of mdf, and the inside is not going to be finished
09:27 PM roycroft: but i have a coolant pump and reservoir at one end, and decided it would be prudent to put a piece of laminate on the bottom on that end
09:27 PM MarcelineVQ: finished as in the surface? are you going to spray it with a sealant just as a guard against the unknown future?
09:27 PM roycroft: i found a scrap that was dated 1998 that was just the right side :)
09:27 PM roycroft: size
09:28 PM roycroft: i probably should put a sealant on the rest of it
09:28 PM roycroft: the underside is painted
09:28 PM roycroft: the top is also mdf, and the top will be plastic laminate and the underside will be painted
09:28 PM roycroft: the only other mdf i'll be using is a bulkhead that i should probably also seal
09:29 PM MarcelineVQ: seems like a good idea, mdf can be pretty thirsty
09:29 PM roycroft: nothing should ever get those surfaces wet, but it does get cold and humid in the garage
09:29 PM roycroft: in the winter
09:29 PM roycroft: we sometimes go weeks on end with the humidity at about 98% and temperatures only a few degrees above freezing
09:29 PM MarcelineVQ: I wonder if a person should use some kind of non-penetrant sealer for it due to that actually
09:29 PM roycroft: shellac is a good sealer for mdf
09:30 PM roycroft: it dries so fast it doesn't have a chance to penetrate much
09:30 PM MarcelineVQ: neato
09:30 PM roycroft: and since the carrier is alcohol, it doesn't cause the mdf to swell up like a water-based sealer would
09:30 PM roycroft: shellac is not very durable though
09:31 PM roycroft: but it's good as a base sealer
09:31 PM roycroft: especially on the "end grain" of mdf
09:44 PM roycroft: so last night, after the conversation here about solidworks and autocad and fusion 360, i went and dug out my old solidworks textbook
09:44 PM roycroft: and i found that i bought both books in the series
09:45 PM roycroft: i think if i go through them both i'll have a pretty good handle on sw
09:45 PM roycroft: i've watched some youtube videos on sw, but there's really nothing like a formal course/text
09:46 PM roycroft: most of the consumer books on sw are "tips and tricks" or specialized advanced topics
09:46 PM roycroft: i'm glad i still had these books - i think they are exactly what i need
09:46 PM roycroft: a couple hours/night going through the exercises, and i'll be fairly adept at it in no time
10:09 PM Tom_L: http://www.boedeker.com/anneal.htm
10:10 PM Tom_L: someone was wondering about stress relieving HDPE
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