#linuxcnc Logs
May 29 2018
#linuxcnc Calendar
12:50 AM fragalot: Hi
01:07 AM gloops: http://walzcraft.com/wp-content/uploads/2011/02/Wood-Corbel-Carving-130748.png
01:08 AM gloops: the problem with those, ive been thinking, is if cut from a square piece of stock, which they must be, is the amount of waste that has to be cut out, even a roughing cycle is going to take ages to remove almost 50% of the block
01:09 AM gloops: solution, first get the cnc to cut a mark outlining the scroll shape on one side, + 2mm say, then cut that out on the bandsaw
01:09 AM gloops: re set block, run finishing pass
01:11 AM IchGucksLive: hi all
01:11 AM gloops: hello
01:11 AM IchGucksLive: gloops, do you got a 3D model of this corbol
01:12 AM gloops: no not that one Ichs, i havent made any yet
01:12 AM gloops: ill share the files when i do
01:13 AM gloops: the CAD is pretty easy
01:13 AM IchGucksLive: https://www.google.de/search?q=corbol+3d+model&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiVpZ2AmqrbAhUJQpoKHZYaDCIQsAQIOg&biw=1620&bih=870
01:14 AM gloops: some beauties there
01:15 AM IchGucksLive: https://free3d.com/3d-model/corbel-11-5597.html
01:16 AM gloops: but many hours cutting on the elaborate ones
01:20 AM IchGucksLive: let me see if i can get it real quick and derti out of the images
01:26 AM Deejay: moin
01:26 AM gloops: morning
01:27 AM IchGucksLive: gloops, got it it is raw but looks nice
01:27 AM gloops: how did you get that so quick?
01:27 AM IchGucksLive: i got cool eding
01:28 AM gloops: grayscale depth map?
01:31 AM IchGucksLive: gloops, http://tv-profi-gmbh.de/pfosten.jpg
01:32 AM IchGucksLive: gloops, stl or blend file
01:32 AM gloops: thats not bad Ichs
01:32 AM gloops: well can use either
01:33 AM gloops: i dont think i set dcc up on hexchat though
01:33 AM IchGucksLive: i will upload a ZIP
01:33 AM gloops: ok
01:34 AM gloops: that is pretty good what you did there, a bit of tweaking with that and its a good model, so quick
01:35 AM IchGucksLive: http://heimwerkermarkt-tretter.de/pfosten.zip
01:36 AM IchGucksLive: ok im off till later
02:16 AM miss0r: mornin'
04:24 AM miss0r: As it turns out, mosquitos do not like brake cleaner too much. Especially if it is on fire
04:30 AM XXCoder: they dont like smell and go away?
04:31 AM XXCoder: or just die from fumes, along with humans? lol
04:35 AM Deejay: i think they begin to burn and fall down ;)
04:38 AM XXCoder: lol
05:06 AM miss0r: burning death!
05:06 AM XXCoder: lol
06:01 AM Loetmichel: hey, anybody seen such a black plastic "lazy susan" turntable for order in germany thats bigger than 25cm diamenter? I have ONE here thats 40cm, but its broken from falling off the table ONE time to many... and it could be 10cm bigger anyway... if i could order 2 or three from a german or european source that would be great.
06:02 AM Loetmichel: (Lifting those heavvy HP laserprinters to work on them around all the time gets a bit tiresome after a while :-)
06:11 AM jthornton: .weather
06:11 AM theCockerel: Yahoo! Weather - Poplar Bluff, MO, US: Mostly Cloudy, 21°C (69°F), Humidity: 89%, Gentle breeze 4.9m/s (↓)
10:00 AM unterhausen: I was thinking about setting up my comp dual boot with win10 so I could use my RC flight sim on it
10:01 AM unterhausen: some hint that it works okay in wine for some people though
10:03 AM phipli: how intensive is it? Could you just run it in a VM?
10:18 AM unterhausen: people have reported running ok in a VM
10:19 AM unterhausen: I think I would rather dual boot, since the comp might spend some time hooked up to a tv
10:37 AM seb_kuzm1nsky is now known as seb_kuzminsky
10:54 AM holzjunkie1 is now known as holzjunkie
11:24 AM holzjunkie1 is now known as holzjunkie
11:49 AM sliptoni` is now known as sliptonic
12:01 PM gloops: dow jones tanking slightly
12:01 PM gregcnc: just up the spindle and feed rate
12:18 PM fragalot: Hi
12:18 PM IchGucksLive: hi all from sunny germany
12:19 PM IchGucksLive: gloops, did the 3D fit your need
12:19 PM IchGucksLive: unterhausen, noch da ?
12:25 PM phiplii: anyone use an avrISP mkII on linux?
12:26 PM IchGucksLive: phiplii, arduino can bridge a programmer
12:26 PM phiplii: sorry IchGucksLive could you rephrase that?
12:26 PM phiplii: I don't quite know what you mean
12:28 PM fragalot: miss0r: company in the UK replied - £290 + 5wk lead-time
12:28 PM fragalot: miss0r: in m42
12:29 PM SpeedEvil: https://www.orbitalfasteners.co.uk/en/products/m42-x-1m-high-tensile-grade-8-8-studding-threaded-rod-self-colour-din-975
12:30 PM SpeedEvil: yow. Taps for that are expensive
12:31 PM IchGucksLive: phiplii, google Arduino Uno as ISP Programmer then you got alot infos
12:31 PM fragalot: SpeedEvil: is single pointing an option?
12:31 PM Rab: phiplii, affirmative, works great for me.
12:32 PM SpeedEvil: fragalot: I do not own, or need the above, was idly wondering based on the above comment how much m42 threaded rod was
12:32 PM IchGucksLive: phiplii, http://www.martyncurrey.com/arduino-nano-as-an-isp-programmer/
12:32 PM phiplii: IchGucksLive, oh right, yeah, I know you can do that, but I have an avrispmk2 so, it would be nice to use it
12:32 PM phiplii: I have other programmers too.
12:32 PM IchGucksLive: i only got the stk500
12:33 PM phiplii: but this is the only one I have that supports PDI and I want to program an xmega
12:33 PM phiplii: IchGucksLive, yeah, I have an stk500 too, I like it, but it isn't the easiest to set up quickly :)
12:33 PM miss0r: fragalot... that is somewhat expensive, ay :)
12:33 PM miss0r: and time consuming
12:33 PM phiplii: IchGucksLive, I like the STK500 box though :)
12:33 PM Rab: I like the mkII for a daily programmer. Unfortunately it's been discontinued for the more expensive Atmel-ICE, and just about everything left on the market is a clone.
12:34 PM miss0r: fragalot: Just what you were hoping for... No! wait, the oposite of what you were hoping for ;)
12:34 PM phiplii: Rab - I have the Olimex one, but avrdude throws an error with the firmware I have
12:34 PM phiplii: known bug
12:34 PM phiplii: but... not fixed
12:35 PM phiplii: IchGucksLive, https://www.avrfreaks.net/sites/default/files/AVR%20STK600%20box%20picture%20and%20the%20REAL%20AVR%20Man.JPG
12:36 PM phiplii: my stk500 had a box like that
12:36 PM phiplii: I'd have that as a poster on my wall
12:36 PM miss0r: fragalot: So what do you mean by m42? made from 42mm roundstock?
12:37 PM fragalot: miss0r: grade of HSS
12:38 PM miss0r: fragalot: Indeed. I thought it'd be carbide at that price
12:39 PM miss0r: fragalot: Are you considering it?
12:39 PM fragalot: so i've fired up Fusion360 to draw out a single flute one, using an 8x8mm HSS inserted into it
12:39 PM fragalot: miss0r: not with the 5wk leadtime, no
12:39 PM miss0r: :]
12:39 PM Rab: phiplii, my avrdude command line is: avrdude -c avrispmkII -p <mcu> -P usb -e -U flash:w:<hexfile>
12:39 PM fragalot: price wise.. i'd prefer not to, but at the same time I don't REALLY expect much cheaper given the size
12:39 PM gregcnc: fragalot what are you making
12:40 PM phiplii: rab - my firmware doesn't work with avrdude versions newer than 6
12:40 PM phiplii: the issue isn't the command
12:40 PM miss0r: fragalot: Hmm... Let me know how it works out. I wouldn't mind giving it a go building one. But I am somewhat tied up at the moment
12:40 PM phiplii: I need either a different firmware, or a patched avrdude
12:40 PM Rab: phiplii, what was your question about the mkII?
12:40 PM fragalot: gregcnc: need a 55° dovetail cutter with a flute HEIGHT of 1"
12:41 PM fragalot: miss0r: need to come up with a way to convince fusion360 to let me slot along an angled surface first xD
12:41 PM phiplii: rab : has anyone had experience with this issue & fixed it on their machine : https://savannah.nongnu.org/bugs/index.php?40831
12:41 PM fragalot: easy in Inventor, just tilt a plane, but...
12:41 PM miss0r: why all the CAD drawings? aren't you going to be doing a manual job at it anyway? Use the internationally recognized napkin drawing with the mandatory coffee stain
12:43 PM Rab: phiplii, I see. Looks like that affects some clones, but not Atmel's official mkII product. Olimex has caused confusion through their product naming.
12:45 PM phiplii: Rab, I'll see what I can do with this : https://github.com/abcminiuser/lufa/tree/master/Projects/AVRISP-MKII
12:46 PM phiplii: looks likely to include updates
12:56 PM Michael_: Moin, moin, ...
12:56 PM IchGucksLive: servus michael
12:56 PM IchGucksLive: hats nun doch geklappt
12:57 PM phiplii: Lol.
12:57 PM Michael_: ja, letzte Nacht schon.
12:57 PM phiplii: Rab, I'm being stupid, I thought I recognised some of the hardware I was seeing. Tom_L was actually involved in the project
12:57 PM * phiplii fails at life
12:58 PM Michael_: Für mich ist das eine ziemliche Umstellung, weil ich seit über drei Jahren nur auf meinem Mumbleserver bin.
12:59 PM Michael_: Das ist eine Voice-to-Voice-Instalation!
01:00 PM Michael_: ich habe es heute allerdings nicht geschaft in die Werkstatt zu kommen, auch wenn das nur 120 m sind.
01:01 PM IchGucksLive: kein problem
01:01 PM IchGucksLive: Michael_, Loetmichel ist deutsch und deejay
01:02 PM IchGucksLive: Michael_, Es sollte ein fenster oder Tab aufgegangen sein
01:06 PM IchGucksLive: gloops, here
01:06 PM Beachbumpete1: hehe stained coffe napkin
01:07 PM IchGucksLive: ;-)
01:22 PM fragalot: gloops: I have a mission for you
01:22 PM fragalot: gloops: find me a 55° single angle milling cutter that is slightly thicker than this one.
01:22 PM fragalot: gloops: https://www.deelat.com.au/metalworking-tools/milling-cutters/angle-milling-cutters/single-angle-milling-cutter-8055
01:28 PM andypugh: Would one of these do the job? https://www.ebay.co.uk/itm/1Pc-40mm-X-55-Degree-HSS-Dovetail-Cutter-Milling-High-Speed-Steel-Tool-/162281298361?_trksid=p2385738.m4383.l4275.c10
01:29 PM andypugh: (The answer is “no” as that has only a 14 mm cutting height)
01:29 PM fragalot: andypugh: I need a height of 25mm,.. at a stretch I could maybe use 22mm
01:30 PM andypugh: The photo of a catalogue on that page shows a 22mm thick 60mm dia one
01:31 PM fragalot: found deelat has an EU site, cutter is €46
01:33 PM hazzy-dev: fragalot: Maybe you need to get a shaper, or planer :)
01:33 PM fragalot: need a bigger shed first, lol
01:34 PM hazzy-dev: Haha, that is a problem!
01:34 PM andypugh: They have the 60mm size here: https://www.ebay.co.uk/itm/Free-Ship-55-HSS-Straight-Shank-Dovetail-Cutter-End-Mill-Bit-55-Degree/301631192357?epid=23005045404&hash=item463a9ebd25:m:mvEiqICTzrs5cAuejGNQEFg
01:34 PM andypugh: Not inexpensive
01:34 PM miss0r: fragalot: no. you are going about it the wrong way. Do it like me: put more stuff into your shed than fits & THEN start to consider needing a bigger one
01:35 PM fragalot: i've already pasesd that point years ago
01:35 PM miss0r: andypugh: It looks like a chinesium tool, with the same height & lower quality than what fragalot already found
01:36 PM andypugh: Indeed. So not necessarily a win
01:36 PM fragalot: I ordered the one from deelat
01:36 PM fragalot: €70 incl tax & next day delivery
01:36 PM hazzy-dev: My shop is so crowded I have to move the Bridgeport depending on which end of the table I am working on, basically the table is stationary, and I move the machine xD
01:37 PM miss0r: hazzy-dev: alright, I bow to your shop :D
01:37 PM andypugh: So, reallly you should have bought an Elgamill?
01:38 PM andypugh: Stationary table, moving head. Though typically quite large: http://www.lathes.co.uk/elgamill/
01:38 PM hazzy-dev: andypugh: I have a moving column mill! Its a mazak VTC-41
01:40 PM gregcnc: somehow I understood that as having to move the bridgeport to work at ends of it's table
01:42 PM hazzy-dev: gregcnc: Yes, i keep a pallet jack under the BP and move it side to side as there is not enough room for the table to have full travel
01:42 PM andypugh: I think that is exactly what he meant. I was being flippant.
01:44 PM hazzy-dev: Oh, he was responding to you andy! lol
01:44 PM gregcnc: apparently my head is still foggy from being sick over the weekend
01:44 PM fragalot: gloops: never mind - just ordered that one. :P
01:52 PM Tom_L: fragalot, did some checking for you today
01:52 PM Tom_L: oh you found a cutter already?
01:53 PM hazzy-dev: andypugh: Those elgamills look like interesting machines!
01:53 PM hazzy-dev: Here is our moving column, before we took the enclosure off to make it more compact, it's a beast of a machine: https://i.imgur.com/ZU0aUxC.jpg
01:53 PM hazzy-dev: I am going to replace ye old mazatol with LCNC when I get the time/money
01:54 PM andypugh: Isn’t there a moving-column machine at that place in Stuttgart?
01:55 PM hazzy-dev: Is it the green one? I think I have seen it in pictures somewhere ...
01:55 PM andypugh: In the background here: https://www.flickr.com/photos/147272829@N02/27980642758/in/album-72157666477277967/
01:55 PM andypugh: But then _all_ German machine tools are Green, it was a DIN standard.
01:56 PM hazzy-dev: yeah thats the one, there is a YT vid of it
01:57 PM fragalot: Tom_L: I did, but i'm still interested in your answer
01:57 PM Tom_L: lemme post some pics
01:57 PM fragalot: superiortool has emailed me earlier today saying they received my RFQ but weren't able to respond sooner due to holidays, and would contact me again later
01:57 PM Tom_L: i talked to them today
01:57 PM Tom_L: in person
01:58 PM andypugh: Ah, yes, DIN 1844 says that machine tools should be Reseda Green.
01:59 PM gloops: sorry wasnt looking just been on autojoin
02:00 PM Tom_L: fragalot does your spindle have reverse?
02:00 PM fragalot: Tom_L: yes
02:00 PM Tom_L: great
02:01 PM Tom_L: i found a used cutter superior may be able to grind alot cheaper but
02:01 PM Tom_L: you would need to use the bottom angle which would require you running it in reverse
02:01 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutter/cutter3.jpg
02:02 PM Tom_L: my first one is shown for comparison
02:02 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutter/
02:02 PM Tom_L: there is 1 chipped tooth
02:02 PM fragalot: that'd be a LOT of material removed
02:02 PM Tom_L: i don't know if superior can grind that tooth sharp or not and still have enough LOC
02:02 PM Tom_L: better than grinding from stock
02:03 PM Tom_L: they don't have any cutters close to that
02:03 PM fragalot: I guess
02:03 PM Tom_L: i didn't have any way to measure the angle but it may be 55 deg already
02:03 PM Tom_L: it wasn't quite 60
02:03 PM Tom_L: they'd need to flatten the bottom and sharpen it and maybe put a pocket in the bottom for the arbor bolt
02:04 PM Tom_L: it is 7/8" thick
02:04 PM fragalot: did they give you an estimate?
02:04 PM Tom_L: the guy want's $5 for the cutter and i didn't get it yet until i talked to you
02:04 PM Tom_L: i can take it to superior and see if they can use it
02:05 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutter/cutter4.jpg
02:05 PM fragalot: well i've got a solution now, so I don't think you need to take it there for a quote anymore if you haven't already
02:05 PM Tom_L: you can see the chipped tooth
02:05 PM Tom_L: looks like there are 2
02:06 PM Tom_L: that shouldn't make it unuseable
02:06 PM fragalot: nah that'd still work fine as long as it didn't rub
02:06 PM Tom_L: but the cut length is there
02:06 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutter/cutter1.jpg
02:07 PM Tom_L: bottom side would need the most work
02:07 PM fragalot: indeed
02:07 PM Tom_L: neither side is flat
02:07 PM fragalot: found a stock one that will /just/ work though if I relieve the dovetail a bit
02:07 PM Tom_L: but it's big enough they could probably salvage it
02:08 PM Tom_L: he put the cutter on the scale just like i figured he would and said $5
02:09 PM fragalot: yeah but it'd likely still be at least $80 to regrind it
02:09 PM fragalot: (pulling that number out of my ass)
02:09 PM Tom_L: i wouldn't be surprised
02:09 PM Tom_L: i'm just giving you some options since you can't find one
02:09 PM fragalot: couldn't*
02:09 PM fragalot: https://www.deelat.eu/metalworking-tools/milling-cutters/angle-milling-cutters/single-angle-milling-cutter-8055
02:10 PM fragalot: I found exactly *ONE* vendor that sells them stock :P
02:10 PM Tom_L: the problem with those (he had some of those too) is there isn't enough meat near the hub to get the angle you need
02:11 PM fragalot: the angle is already there
02:11 PM fragalot: the picture shows a 75° one
02:11 PM Tom_L: oh
02:11 PM fragalot: but the part sold is a 55°
02:12 PM Tom_L: if it will do the job that's probably the way to go
02:13 PM Tom_L: i just knew that old guy here has some odd stuff you normally wouldn't find
02:13 PM Tom_L: i'll get it and use it for a ninja star :D
02:20 PM fragalot_ is now known as fragalot
02:20 PM miss0r2: What the hell just happened
02:20 PM fragalot: welcome to my life
02:24 PM Tom_itx: fragalot, if you wanted a quote from superior i could grab the cutter and drop it by and see if they could use it
02:25 PM Tom_itx: i'm sure that would be cheaper than cutting a blank
02:26 PM gloops: could have ground it on the lathe
02:26 PM Tom_itx: see if yours works out, i'm sure the cutter isn't going anywhere
02:26 PM fragalot: Tom_itx: sure, but it'd be just out of curiosity at this point, i have no reason to order it there anymore
02:27 PM fragalot: (so i'd be wasting both your, and their time)
02:27 PM Tom_itx: i'll save my $5 and buy lunch
02:27 PM Tom_itx: :)
02:28 PM fragalot: :P
02:28 PM gregcnc: where can you still get lunch for $5?
02:30 PM Tom_itx: home
02:30 PM Tom_itx: barely
02:33 PM gloops: https://www.etsy.com/uk/listing/556871376/laser-cut-metal-decorative-wall-art?ref=hp_rv
02:33 PM gloops: decent laser to cut 3/16s aluminium?
02:33 PM SpeedEvil: A murderously expensive one
02:34 PM gloops: https://i.etsystatic.com/il/da8957/1360041428/il_570xN.1360041428_my0j.jpg
02:34 PM gloops: nice job it makes
02:35 PM SpeedEvil: Router + a tiny amount of hand-work would also do it
02:37 PM gregcnc: router would not be fun
02:37 PM SpeedEvil: Actually - nothing looks very sharp. A 3mm or so bit and many passes would also work.
02:38 PM SpeedEvil: Warping may be fun
02:38 PM Rab: Sure it's not waterjet?
02:38 PM gloops: suppose it depends on the router
02:38 PM SpeedEvil: First hot-melt gluing it down to a backing sheet might make it easy
02:38 PM gloops: Rab i dunno, it says laser
02:38 PM Rab: ahh
02:39 PM gregcnc: have to make sure the cutouts don't move
02:39 PM gloops: i was going to try this with .5mm ally sheet glued to mdf
02:39 PM SpeedEvil: Planning the cutting order would be fun
02:40 PM gloops: sticky the ally might last a few years, depends where the piece is hung, over a radiator, in the bathroom - potential disaster, not that anyone is going to ask for their cash back
02:40 PM SpeedEvil: Inverting it might be interesting.
02:41 PM gloops: SpeedEvil for routing, first toolpath is a series of holes in the waste areas - stop, screw it down, then run profile cut
02:42 PM SpeedEvil: I was more meaning so you don't disturb the thin bits
02:42 PM gloops: just have to design accordingly
02:44 PM gloops: anyway you can get brushed ally vinyl - 400 ipm just sell more at budget price
02:45 PM SpeedEvil: EDM a couple out of hardened steel, get a thousand ton press, and stamp them out of Al sheet at 60/min
02:45 PM gregcnc: in theory
02:46 PM gloops: gregcnc loads of people would have those but have only got £70 to spend
02:46 PM gregcnc: then you're rich, just not yet
02:46 PM SpeedEvil: 'loads'
02:46 PM SpeedEvil: and can you find them?
02:47 PM gloops: ahh well, making things and selling them are two different trades
02:47 PM gregcnc: ikea "loads" at ikea prices?
02:47 PM gloops: i doubt youd get rich on etsy
02:47 PM gregcnc: people are doing it
02:47 PM gloops: yes they are
02:48 PM gloops: we can but try
02:48 PM SpeedEvil: it's harder to make money now that it's suspicious to buy things with eight tons of coins.
02:49 PM gloops: https://bitcoinstip.com/the-sun/i-became-an-ebay-millionaire-by-selling-underwear-from-my-kitchen-table-7640/
03:12 PM arekmx is now known as arekm
03:12 PM CaptHindsight: powder bed sintering without a laser https://youtu.be/6973AGmukrI?t=1m12s
03:14 PM CaptHindsight: looks like the thermoplastic powder market is being controlled
03:15 PM fragalot: indeed
03:15 PM CaptHindsight: I just a got a quote today for plastic grinder for $450K that only grinds 25Kg per hour
03:17 PM fragalot: ._.
03:20 PM CaptHindsight: the same morons are asking if I'd like to come and test some materials for $1800/day plus expenses
03:20 PM gloops: tell them youll do half a day for 2k
03:21 PM pcw_mesa_: how hard can grinding plastics be?
03:21 PM gloops: what do you want to grind plastic for anyway?
03:21 PM gloops: plastic dust?
03:21 PM CaptHindsight: they start as pellets the size of small peas 5mm^3
03:22 PM CaptHindsight: sort of a cylindrical shape
03:22 PM CaptHindsight: and you need them as <100um particles for sintering
03:23 PM CaptHindsight: grinding produces heat so you have to cryo cool the pellets while grinding
03:23 PM fragalot: what is in that thing other than 2 close tolerance coarse drums?
03:23 PM CaptHindsight: so you use liquid nitrogen
03:23 PM fragalot: would a standard water chiller not suffice?
03:23 PM CaptHindsight: not cool enough
03:23 PM pcw_mesa_: Ahh wondered about that, also make them brittle and easier to grind
03:23 PM fragalot: interesting
03:23 PM CaptHindsight: you freeze the pellets on the way to the grinder
03:24 PM gloops: its not that much when you consider packing machines cost twice as much
03:24 PM CaptHindsight: plastic pellets ~$2/lb for nylon
03:24 PM gloops: pneumatics, electronics, service deal etc, its what stuff costs
03:24 PM pcw_mesa_: melt and spray underwater?
03:24 PM CaptHindsight: plastic powder >$100lb
03:25 PM fragalot: pcw_mesa_: not easy to control the droplet size in that environment
03:25 PM CaptHindsight: I was just at a Powder trade show
03:26 PM CaptHindsight: the level of BS was ridiculous
03:26 PM pcw_mesa_: Maybe not fluid enough for spraying either
03:26 PM fragalot: :P
03:26 PM fragalot: pcw_mesa_: that's only a matter of pressure
03:26 PM CaptHindsight: everyone says that their tech work and the others won't
03:26 PM fragalot: pcw_mesa_: well, pressure, and the mechanics of the spray & what methods used to break up the droplets
03:27 PM CaptHindsight: pin mills, hammer mills, air classifying, and jet
03:28 PM CaptHindsight: http://www.munsonmachinery.com/Pin-Mills/
03:29 PM CaptHindsight: jet mill https://www.ceramicindustry.com/ext/resources/CI/2004/04/Files/Images/102381.jpg
03:30 PM pcw_mesa_: how about cutting bundled fiber? paper cutter and a bunch of old nylons :-)
03:30 PM CaptHindsight: air classifier mill http://www.kemutecusa.com/wp-content/uploads/2017/07/PPS-How-it-works-Kemutec.jpg
03:31 PM CaptHindsight: yeah on the cheap
03:32 PM CaptHindsight: http://www.feedmachinery.com/glossary/equipment/hammer_mill/
03:33 PM fragalot: would a ball mill work for low QTY's ?
03:33 PM CaptHindsight: sure
03:33 PM CaptHindsight: grams at a time
03:33 PM fragalot: bigger mill. :P
03:33 PM CaptHindsight: ball mills get down to nm particles
03:34 PM CaptHindsight: metal powders are easier
03:34 PM CaptHindsight: plasma spray gets you few nm particles
03:34 PM andypugh: I wa`nt to make picometer particles :-)
03:35 PM fragalot: andypugh: there are health reasons that say you don't really if you can avoid it
03:35 PM CaptHindsight: 10,000 picometer? :)
03:35 PM andypugh: There are fundamental physics reasons that say it is quite hard…
03:36 PM CaptHindsight: heat thermoplastic to liquid phase and then spray without it cooling to quickly
03:37 PM CaptHindsight: hot gas atomizer
03:39 PM CaptHindsight: https://ars.els-cdn.com/content/image/1-s2.0-S0921883117304624-gr1.jpg
03:41 PM CaptHindsight: works for metals
03:41 PM fragalot: does that not reduce the quality of the polymers?
03:42 PM CaptHindsight: if you get them too hot
03:42 PM CaptHindsight: that first video used 100% recycled plastic
03:45 PM CaptHindsight: another option is also developing new or out of patent thermoplastics in powder form right from the reactor vs pelletized
03:45 PM CaptHindsight: injection molding and extruding all use pellets
03:46 PM CaptHindsight: https://upload.wikimedia.org/wikipedia/commons/f/f5/Plastic_pellets_for_injection_molding.jpg
03:46 PM SpeedEvil: many polymers aren't too bad at their melting temperature, if you keep air away
03:46 PM SpeedEvil: So you can somewhat spray them
03:47 PM fragalot: usually not an issue to either use steam or CO2
03:47 PM SpeedEvil: yeah
03:47 PM SpeedEvil: On out of patent.
03:47 PM CaptHindsight: even Chinaco Nylon 6/6 is $60/lb
03:48 PM SpeedEvil: https://patents.google.com/patent/EP0695408A1/en is neat
03:48 PM fragalot: when you say "out of patent", do you mean "blueprinted proven technology"? :P
03:49 PM CaptHindsight: fragalot: some themoplastics are still under patent
03:49 PM CaptHindsight: the formula
03:49 PM SpeedEvil: Take somewhat dried wood, and then bake under steam at atmospheric pressure at 150-180C to get it to age and go somewhat browner, and be entirely resistant to many sorts of rot
03:49 PM CaptHindsight: oh $50/Kg not Lbs
03:50 PM CaptHindsight: still 25x higher than pellet prices
03:52 PM CaptHindsight: pa12 https://www.alibaba.com/product-detail/sintering-usage-pa12-nylon-powder-for_60519887916.html
03:53 PM gloops: SpeedEvil or drop in a bath of caustic soda for a few weeks
03:53 PM Deejay: re
03:53 PM gloops: pine responds especially to well to that treatment
03:54 PM gloops: also useful for disposing of unwanted bodies, so im told
03:54 PM CaptHindsight: Melting Point: 184 ℃
03:56 PM SpeedEvil: gloops: it is interesting in that it also stabilises it with respect to moisture absorbtion
03:56 PM SpeedEvil: https://www.metsawood.com/global/Products/uk-products/exterior-cladding/thermowood/Pages/thermowood-cladding.aspx
03:56 PM fragalot: there's another process for turning it practically fully transparent too
04:00 PM gloops: well, im not chemist, but wood is largely cellulose isnt it? what happens to cellulose at 150C ?
04:00 PM gloops: (that stops things eating it afterwards)
04:01 PM CaptHindsight: there are thousands of thermoplastic variations and blends
04:01 PM CaptHindsight: the SLS printers seem to focus on supporting only a few
04:01 PM CaptHindsight: I think they do to make the printers more idiot proof and lock in the buyers to their powders
04:02 PM fragalot: get those to work right and become affordable before experimenting too much
04:02 PM fragalot: indeed
04:03 PM CaptHindsight: like selling a cnc mill with pre-programmed paths vs you program it
04:03 PM CaptHindsight: or a 1/4" end mill welded to the spindle
04:04 PM CaptHindsight: mills anything the end mill can handle
04:04 PM fragalot: don't forget the proprietary interface
04:05 PM CaptHindsight: and open mode with crippled features
04:05 PM CaptHindsight: spindle limited to 50 rpm, feed rate to .5"/min etc
04:10 PM holzjunkie1 is now known as holzjunkie
04:16 PM SpeedEvil: gloops: it's mainly the non-cellulose components that get baked out.
04:16 PM SpeedEvil: gloops: and/or drastically modified
04:22 PM XXCoder: basically denaturing wood so its not ediable for whatever eats wood I guess
04:22 PM Deejay: gn8
04:24 PM CaptHindsight: https://www.nature.com/articles/d41586-018-01600-6
04:24 PM CaptHindsight: Crushed wood is stronger than steel
04:25 PM CaptHindsight: https://www.youtube.com/watch?v=5rj7GWDUXDU Ballistic test
04:25 PM gloops: yes but you cant get welding rods for wood
04:26 PM CaptHindsight: https://www.chemistryworld.com/news/bullet-proof-wood-developed/3008627.article
04:26 PM syyl: just use wet dowels
04:26 PM syyl: and crank the amps up
04:27 PM CaptHindsight: cellulose glue as cellulose glue
04:29 PM CaptHindsight: now if we can just get trees to grow themselves more densely
04:30 PM syyl: just use the right species?
04:30 PM syyl: ;)
04:30 PM syyl: slow growing should be denser, right?
04:30 PM CaptHindsight: it's probably a water issue
04:30 PM CaptHindsight: space required to move it around
04:31 PM gloops: GM
04:31 PM XXCoder: future we probably could engineer dense tree that grows faster, and are square
04:31 PM syyl: just grow them trough a square die ;)
04:31 PM syyl: extruded tree
04:31 PM syyl: (i guess thats not how it works.)
04:31 PM gloops: something that grows like bamboo but 10 times denser than ebony
04:32 PM syyl: haha
04:32 PM XXCoder: bunch of bamboo species is hardier than best hardwoods out there
04:32 PM syyl: and as stiff as spring steel?
04:32 PM gloops: easily
04:32 PM gloops: wood is on the chart against metal already
04:32 PM syyl: while whe are adding to the wishlist, i want it to be magnetic
04:33 PM CaptHindsight: still doesn't help me get nylon powder
04:33 PM devlap: i think my latency is crap
04:33 PM XXCoder: bamboo grows like grass, and you dont need to remove roots to grow more. just keep cutting good sized ones
04:33 PM gloops: XXCoder we are missing out on some awesome natural resources
04:33 PM CaptHindsight: devlap: have you disabled power management, speed stepping, virtualization in BIOS yet?
04:33 PM devlap: Yea
04:34 PM XXCoder: gloops: bamboo is slowly growing as resource. at ikea I saw table made entirely from bamboo
04:34 PM XXCoder: smallish one but still.
04:34 PM CaptHindsight: devlap: some boards are just poor,
04:34 PM syyl: we see it here a lot for flooring
04:34 PM syyl: kinda expensive, but great looking
04:34 PM syyl: and i guess, it will last forever
04:34 PM CaptHindsight: devlap: and some BIOS screens show the options but don't actually turn off what you expect
04:35 PM CaptHindsight: get trees to just grow in the shape of a house
04:35 PM devlap: CaptHindsight, I got the p5b on ich's suggestion
04:36 PM CaptHindsight: or modify humans to grow roofs over their heads
04:36 PM XXCoder: why?
04:36 PM CaptHindsight: devlap: then ask him for suggestions
04:36 PM XXCoder: just modify humans to be weatherproof
04:36 PM CaptHindsight: or not care
04:36 PM syyl: we are weatherproof
04:36 PM syyl: kinda
04:36 PM syyl: at least we dont disolve in water
04:37 PM syyl: or melt in average heat
04:37 PM CaptHindsight: you just need to take longer baths
04:37 PM syyl: hail and lightning strike might be a problem
04:37 PM ve7it: in the olden days being dipped in tar and feathers was pretty effective
04:37 PM CaptHindsight: only for the person getting struck
04:37 PM CaptHindsight: you have to think big picture
04:38 PM gloops: everything seems to indicate that humans lost their hair for cultural mate selection purposes
04:38 PM gloops: i.e it wasnt trendy to be hairy so hair was bred out
04:38 PM gloops: we just need to get it back and many clothing/housing problems are over
04:43 PM devlap: 31k max interval 6k jitter on base
04:43 PM devlap: 1M Servo with 4k jitter
04:52 PM andypugh: I would like my prehenisle tail back.
05:06 PM JT-Shop: I want my shower finished...
05:07 PM JT-Shop: andypugh: what does a stone roof use for a ridge cap?
05:11 PM andypugh: Normally carved stones..
05:12 PM andypugh: Here are some: https://goo.gl/images/ApGJAP
05:13 PM SpeedEvil: Depends what sort. Lead has also been used.
05:14 PM SpeedEvil: fan
05:14 PM SpeedEvil: https://i1.wp.com/www.roofersinblackpool.co.uk/wp-content/uploads/2017/01/lead.jpg?fit=960%2C720&ssl=1
05:15 PM SpeedEvil: https://www.exeter-cathedral.org.uk/history-heritage/conservation-of-the-cathedral/lead-roof-cresting/
05:16 PM andypugh: There is another way, very rarely seen, where the top slates are interlocked. I think this place has that method: https://goo.gl/images/afHMRr
05:17 PM andypugh: SpeedEvil: That’s Slate rather than the type of stone roof I think JT was talking about.
05:17 PM SpeedEvil: ah
05:18 PM JT-Shop: I am talking about the one you worked on, your Dad's I think
05:19 PM andypugh: Yes, this one. http://www.bodgesoc.org/Slaithwaite2/Front.JPG
05:19 PM andypugh: That has the carved-stone ridges.
05:20 PM andypugh: (That cathederal roof is all lead
06:04 PM JT-Shop: I wondered how they did the ridge cap and carved stone makes sense
06:17 PM devlap: The PWM setup for my spindle isnt working right. I put it on the 30k rpm setting and I'm getting like 100rpm
06:19 PM devlap: PWM rate is set to 400 hz, speed 1 3000 @ 0.125 and 24000 @ 1.0
06:23 PM phiplii: JT-Shop, my parents slate roof has ridge tiles the same as a tile roof
06:25 PM phiplii: andypugh, that building is made out of good stone - is each piece shaped?
06:28 PM pcw_mesa_: devlap, might be scaling or polarity is the output higher at lower spindle speed settings?
06:30 PM devlap: no it wasnt running at all at the rpm i wanted
06:30 PM devlap: so i maxed it
06:30 PM devlap: and i got just a little movement.
06:31 PM pcw_mesa_: so sounds like scaling
06:32 PM devlap: Yea the VFD has a 0-10 output, but im sending pwm to the bob
06:32 PM devlap: so im not sure how that works
06:32 PM devlap: *input
06:34 PM pcw_mesa_: does sound like a setup/scaling error in the hal/ini files
06:51 PM andypugh: devlap: Basically you just feed the PWM into a capacitor / resistor filter and that converts it to analogue voltage.
06:52 PM devlap: a low pass sure converts PWM into analog.
06:52 PM andypugh: Though you do need a BoB with the right circuit for that to work.
06:52 PM devlap: yea mines a mach3 parallel 5 axis bob
06:52 PM andypugh: Does it claim to have spindle-analofue out?
06:53 PM devlap: there is certainly a 0-10 output on the bob
06:54 PM andypugh: Next thing to check is that voltage, with a multimeter then.
06:54 PM andypugh: (or just ask for 10x the spindle speed..)
06:55 PM devlap: I can scope it.
06:55 PM devlap: Alright I'll give her a looksee tommorow then and check the usual suspects, thanks.
06:55 PM andypugh: I don’t suppose the spindle is turning at 1/60th of the requested speed (rps / rpm scaling confusion)
06:55 PM andypugh: Anyhow, time for bed here.
07:06 PM flyback: Tom_itx, we got way further hacking these things
07:06 PM flyback: https://www.reddit.com/r/RTLSDR/comments/8mlbps/tzumi_magictv_is_an_openwrt_board_rtlsdr/
07:06 PM theCockerel: [REDDIT] Tzumi MagicTV is an OpenWRT board + RTL-SDR + batterypack (more details within) (https://i.redd.it/cvf77dqh6h011.jpg) to r/RTLSDR | 300 points (98.0%) | 155 comments | Posted by meowTheKat | Created at 2018-05-27 - 22:34:15
07:19 PM hazzy-dev: flyback: I have been kinda following that redit thread and ##rtlsdr, it is all WAY over my head and I don't understand any of it, but could one of those things be modified to use as a SDR for the HAM bands, or are the frequencies too far off?
07:21 PM flyback: we are trying to find out ;)
07:21 PM hazzy-dev: ok, I will stay tuned :)
07:22 PM flyback: hah
07:22 PM flyback: pun intended?
07:22 PM hazzy-dev: yes
08:10 PM aircooled: Tom_itx pcw_mesa_: I'm using the script to build the 4.16.8 kernel, at the make xconfig point I've forgot what the option to set for fully preemptable kernel
08:10 PM aircooled: All I can find is "Preemptable kernel (Low latency desktop)" is that the right one?
09:21 PM CaptHindsight: .pizza
09:31 PM Tom_itx: aircooled the script shows 3 things to set in the comments
09:32 PM Tom_itx is now known as Tom_L
09:36 PM Tom_L: # there are 3 main things you need to set in xconfig
09:36 PM Tom_L: # enable hpet
09:36 PM Tom_L: # set 64 bit if your OS is 64 bit and
09:36 PM Tom_L: # set for fully preemptable kernel
11:19 PM aircooled is now known as hazzy-lab
11:24 PM hazzy-lab: Tom_L: Thanks! For some reason the "Fully Preemptable Kernel" option is not there on this machine, no wonder I can't find it!
11:26 PM hazzy-lab: Your script worked fine on my other machine, guess I'll run it line by line here and see what happens
11:28 PM hazzy-lab: Aha! wget https://www.kernel.org/pub/linux/kernel/projects/rt/4.16/patch-4.16.8-rt3.patch.gz gives a 404 not found error, so the patch was not applied
11:28 PM hazzy-lab: hmm
11:31 PM hazzy-lab: Looks like there is a new version of the patch out, 4.16.12-rt5 vs. 4.16.8-rt3 in the script
11:31 PM hazzy-lab: This is the new URL: https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/4.16/patch-4.16.12-rt5.patch.gz
11:38 PM holzjunkie1 is now known as holzjunkie
11:46 PM fragalot: hi
11:47 PM hazzy-lab: hello