#linuxcnc Logs

Dec 21 2019

#linuxcnc Calendar

12:31 AM veegee: Officially the proud owner of a "First LC 1-1/2 VS" vertical mill in excellent condition
12:36 AM veegee: no wear that I can see
12:36 AM veegee: including 3 axis DRO, power feed in quill and X
12:36 AM veegee: air power drawbar
12:39 AM veegee: Hauled it on a trailer myself. Built a solid base for it using 4x4 lumber and tied down with 4,000lb rated straps
12:40 AM veegee: Now just have to disassemble it to move it into my basement
12:40 AM veegee: And need some kind of VFD or something to power the motor. It needs three phase 600V
12:50 AM XXCoder: can convert to single phase but you lsoe something in power irrc
12:52 AM XXCoder: *lose *iirc
02:01 AM Deejay: moin
02:15 AM fjungclaus1 is now known as fjungclaus
04:02 AM p0g0: veegee, use a chainsaw and just cut a hole in the house... (my dad did just that to get a boat out of the basement. 20 years later I encountered the new owner of that house, it was fun to explain).
04:10 AM SpeedEvil: pascalrs: your network is very broken
04:42 AM mr_Boo: could someone recommend a brand for an affordable CNC that has good performance when it comes to precision and geometry?
04:43 AM XXCoder: define affordable
04:43 AM mr_Boo: i know my request is a bit generic in nature
04:43 AM XXCoder: $1 million is affordable for quite large cnc for company
04:44 AM mr_Boo: say $1000 - $2000
04:44 AM XXCoder: usercase?
04:44 AM mr_Boo: i should've said for private use
04:45 AM XXCoder: ie for machining metal parts, plastic/wood, need 4/5 axis or not etc
04:45 AM mr_Boo: i've been told that 3 axes for metal
04:47 AM mr_Boo: someone who knows has said that for example the Stepmores SM-4040 has poor geometry
04:47 AM mr_Boo: otherwise it would've been the choice for me
04:51 AM XXCoder: good question
04:51 AM XXCoder: problem with cncs is simple
04:52 AM XXCoder: its expensive enough that people tend to buy one
04:52 AM jthornton: morning
04:52 AM XXCoder: hey jt maybe you have good idea for boo
04:52 AM XXCoder: anyway so that person have experence with one machine but not others
04:52 AM XXCoder: if guy told you that sm-4040 have poor geometry maybe good idea
04:52 AM XXCoder: to listen that is
04:53 AM mr_Boo: it would suck to find out such a fact the hard way
04:53 AM XXCoder: yah
04:55 AM mr_Boo: hopefully something similar exists in the same priceclass but without poor geometry
04:56 AM XXCoder: even smallest commerical machine that I know of, tomak, is in least 5 times that
04:57 AM mr_Boo: the bottom line seems to be that if a CNC for any reason would be precise and reliable then it must also be very expensive
04:57 AM XXCoder: depends on tols you need
04:58 AM XXCoder: if its like .03" then its somewhat easy to find one
04:58 AM XXCoder: if its .0005+-" then...
05:00 AM mr_Boo: i certainly need 0.0005
05:03 AM mr_Boo: wonder why such tolerances should be so hard to obtain
05:03 AM XXCoder: well there is this saying
05:03 AM XXCoder: move . one to left means move price . to right
05:03 AM mr_Boo: all it should take would be precise rails and mechanics
05:04 AM jthornton: you should just build one if it's that easy
05:04 AM XXCoder: yeah
05:04 AM mr_Boo: but of course the parts will then be expensive
05:05 AM mr_Boo: such as ball screws and carbide rails
05:07 AM mr_Boo: i'm sure that bying all the ingredients of an expensive CNC would just cost a fraction of the finished product
05:07 AM XXCoder: yeah. usually what youre buying is also support
05:07 AM XXCoder: its expensive
05:07 AM XXCoder: d500 at work broke its encoder and smashed its 5th axis
05:08 AM XXCoder: it took professional guy 3 weeks to fix it
05:08 AM XXCoder: that is a lot of money
05:10 AM mr_Boo: what if some manufacturer would present for example a SM-4040 style CNC but with 0.0005 tolerance and perfect geometry at this $2000 price would that cause a lot of mess in the already very ordered market for CNCs in general?
05:10 AM XXCoder: yeah not happening
05:10 AM XXCoder: cnc machines is expensive to make
05:11 AM mr_Boo: it seems like it can be done but there is no intent
05:11 AM XXCoder: at professional level machines (.0005" level) machine would have maybe 1ftx1ft x5inch workspace lol
05:11 AM jthornton: you should make one and see
05:11 AM XXCoder: probably not possible even then
05:12 AM mr_Boo: i haven't got any experience with CNCs
05:12 AM XXCoder: trust jt
05:12 AM mr_Boo: but i realize that carbide guide rails would be a good idea
05:12 AM XXCoder: hes a machine maker
05:12 AM XXCoder: im techinically one but not very good one lol
05:12 AM XXCoder: i work as cnc machinist at work
05:13 AM XXCoder: I can't afford jt. sorry jt lol
05:14 AM XXCoder: reminds me of this story
05:15 AM XXCoder: expert guy on that machine was retired a while ago. as it happens, that machine seem to have having issues and nobody can find cause. finally they call that guy and he comes in as contractor. he looks around checking stuff then marks X on problemic part. he asks for $50,000
05:16 AM XXCoder: they was shocked so they asked him for bill list. he makes one, its "mark: $1. knowledge of where to put said mark: $49,999"
05:17 AM mr_Boo: the CNC business seems to be very posh
05:17 AM XXCoder: lol
05:20 AM mr_Boo: i'm trying to decide wether to build me a CNC since i have some stuff such as stepper motors and drivers and i can build stuff in the workshop
05:21 AM XXCoder: you have welding skills?
05:21 AM mr_Boo: or should i spend my time for other stuff
05:21 AM p0g0: mr_Boo, be assured, precise repeatability on a CNC is not trivial or cheap.
05:21 AM mr_Boo: nope but a friend of mine works as a welder
05:21 AM XXCoder: precison, price, amount of sideload it can handle
05:21 AM XXCoder: choose one, two or 34
05:21 AM XXCoder: er 3
05:22 AM mr_Boo: an ordinary printer is at least repeatable
05:22 AM XXCoder: normal printer handles zero sideload
05:22 AM XXCoder: (essentally there is some friction and rubbing)
05:22 AM p0g0: The origins of these tools goes back to WW2 anyway, longer if you look at lathes and such.
05:22 AM mr_Boo: but it sees no physical force
05:22 AM XXCoder: yeah thats what I mean by sideload
05:23 AM mr_Boo: the load seems to mess things up quite a bit
05:23 AM p0g0: torsion and linear forces abound.
05:24 AM Loetmichel: mr_Boo: you can aim for a CNC 3018 router. a real Mill would be a bit big of a goal
05:24 AM Loetmichel: there is even a file for that on thingverse to make a lot of parts with the printer
05:24 AM XXCoder: thats little too far below 2k budget
05:24 AM XXCoder: its like $200
05:24 AM Loetmichel: yes
05:25 AM Loetmichel: i didnt see 2k budget
05:25 AM Loetmichel: i thought he wanted to build one from scrap parts
05:25 AM XXCoder: cnc 3040 maybe though it dont really handle alum well
05:25 AM XXCoder: its better to buy old used cnc machine and rebuild it
05:25 AM * Loetmichel is a REAL fan of the 6040, and they are $1k atm out of the box ;)
05:26 AM mr_Boo: couldn't one just have a very slow feedrate to be able to perform better for metal?
05:26 AM XXCoder: theres lower bound
05:26 AM XXCoder: rubbing and making powder
05:26 AM XXCoder: both dulls tool
05:26 AM Loetmichel: mr_Boo: 6040 is good for alu and brass
05:26 AM mr_Boo: i i had no idea there was a lower bound for feedrate
05:26 AM Loetmichel: not so much for steel
05:26 AM XXCoder: https://www.youtube.com/watch?v=k_Lm9KalAzI
05:27 AM Loetmichel: been there done that, way to much "spring action" that rips the mill bit off
05:27 AM XXCoder: see it making chips. its little low load but works well enough
05:27 AM p0g0: mr_Boo, take that as a hint that there are a zillion such things to learn about feeds & speeds & milling/cutting.
05:28 AM Loetmichel: XXCoder: there you can see the problem already: spindle starts "hopping" on the push side
05:28 AM mr_Boo: what happens when cutting too slow?
05:28 AM Loetmichel: in your video i mean
05:28 AM XXCoder: i dont see it I guess its in audio
05:28 AM p0g0: mr_Boo, that depends on the mill, the bits, the material you are cutting, and then some.
05:29 AM XXCoder: mr_Boo: like I said rubbing or making powder. rubbing doesnt really cut so it dulls tool, powder is too many cuts per edge so it dulls tool
05:29 AM Loetmichel: mr_Boo: basically: you make "dust" and that dust grinds down the mill bit and makes it dull
05:29 AM mr_Boo: now i get it
05:30 AM p0g0: mr_Boo, cutting faces have a cutting edge and a gullet- the feed into that cut is proportional to the tooth and gullet, and those vary by hardness of material and available torque.
05:30 AM Loetmichel: XXCoder: at the very beginning of your video, when the mill bit comes "back forth" it hops up and down
05:31 AM XXCoder: ah yeah see it
05:31 AM XXCoder: little vibrations up/down
05:31 AM XXCoder: very bad for tool
05:31 AM mr_Boo: are the tools carbide?
05:31 AM p0g0: maybe
05:31 AM Loetmichel: mr_Boo: i have two CNC 6040. usually i go with VERY low cutting depth and small tools to avoid what i discussed wit XXCoder.
05:31 AM p0g0: stellite, carbide, diamond, carborundum...
05:32 AM XXCoder: cobolt
05:32 AM p0g0: yeah, my list is not complete
05:32 AM Loetmichel: reason is that all those CNC XXXX chinese routers have the same problem: the gantry isnt stiff, its just two ground rods with no support at all
05:32 AM XXCoder: yeah wanted to add interesting ones heh'
05:32 AM Loetmichel: so it has a lot of "spring action" if you get side load
05:32 AM XXCoder: yeah im betting you could add corners to strength it
05:32 AM Loetmichel: no
05:33 AM XXCoder: big external ones and tiny inside ones
05:33 AM Loetmichel: its basically "free flying"
05:33 AM Loetmichel: on the gantry
05:34 AM Loetmichel: one could refit those machines with SBRs on the gantry and a sizeable box section behind it to support the supports and it would make the machine about 200% as rigid as before
05:34 AM Loetmichel: but thats a BIG task
05:34 AM XXCoder: im not too worried, my home projects is wood
05:34 AM XXCoder: virtually zero sideload on that
05:34 AM Loetmichel: XXCoder: there is nothing to connect the corners to.
05:34 AM p0g0: XXCoder, eh, knots.
05:35 AM Loetmichel: the gantry is basically two side walls with screwed in ground rods.
05:35 AM XXCoder: yours is rods, mine is alum slabs
05:35 AM p0g0: Plenty of sideload in a cedar or hemlock board that hits a knot- the wood is very soft vs the knot.
05:35 AM Loetmichel: no support across the "beam" at all, the sheet metal you see is just decoration
05:35 AM XXCoder: yeah I would set it to hardwood speed if there was knots
05:35 AM XXCoder: sheet?
05:36 AM XXCoder: its 1/2 inch alum
05:36 AM XXCoder: my machine isnt same as yours it seems :)
05:37 AM XXCoder: but yeah its not strong enough for alum unless light cuts anyway
05:37 AM Loetmichel: hmpf.
05:37 AM XXCoder: mine comes with small corners inside
05:38 AM p0g0: XXCoder, the head saw mill I had- those had a rep for spitting teeth in Hemlock. Stellite teeth that are a rolled inset into the saw blade, they would come out at high speed if hit right.
05:39 AM XXCoder: sounbds fun
05:39 AM p0g0: I never milled Hemlock on it...
05:39 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17607&g2_imageViewsIndex=1 <- there is an extrusion in front of the x sled (right behind the end switch) and a "Z" extrusion on the back of the gantry. but both have NO connection to the x axis itself.
05:40 AM Loetmichel: the x axis consists of two 25mm thiock ground rods screwed into the sides of the gantry and a ballscrew in the middle of that
05:40 AM Loetmichel: and those 25mm rods are NOT supported at all
05:41 AM XXCoder: ah yeah misunderstood what you meant
05:41 AM XXCoder: mine have a fin in rear on that top/back sheet
05:41 AM XXCoder: its to hold chain cable
05:41 AM Loetmichel: it doesent matter how rigid the gantry is if the rods is all what carries the x/z axis
05:41 AM XXCoder: but it also increases strength of that surface so it dont distort
05:41 AM Loetmichel: yes. the "Z" extrusion ;)
05:42 AM Loetmichel: but it doesent help if the gantry is rigid but has no connection to the actual rails
05:42 AM XXCoder: i see how you setup homing switch
05:42 AM XXCoder: didnt think of that
05:42 AM XXCoder: oh and z too
05:42 AM XXCoder: hmmmm that gives me ideas
05:42 AM XXCoder: too bad no rooooom for my cnc router :(
05:43 AM XXCoder: how you do y?
05:56 AM Loetmichel: XXCoder: on tghe back front
05:56 AM XXCoder: the front cross beam?>
05:56 AM XXCoder: on top of it?
05:56 AM XXCoder: erm rear
05:56 AM Loetmichel: it sits on the side on the front plate so that the gantry crossbar presses the switch
05:56 AM XXCoder: ok
05:57 AM XXCoder: I have switches but havent installed or used em
05:59 AM Loetmichel: the housings were more work than the CNC itself to be honest: http://www.cyrom.org/palbum/main.php?g2_itemId=17586
05:59 AM XXCoder: i do want to have something like that
05:59 AM Loetmichel: https://www.youtube.com/watch?v=lm-kpV2Msn0
06:13 AM XXCoder: cant watch too shaky
06:14 AM jthornton: yea Loetmichel needs a steady cam lol
06:15 AM Loetmichel: :-)
06:15 AM XXCoder: I need one too lol
06:18 AM jthornton: XXCoder, what time is it over there?
06:18 AM XXCoder: 4 am
06:18 AM XXCoder: good morning
06:19 AM jthornton: ok, gotta wait 2 hours for dreamhost support to wake up
07:33 AM jymmmm: Good morning swarf sluts :D
07:44 AM gregcnc: i'll need some coffee first
07:48 AM jymmmm: lol
09:10 AM elmo40: Loetmichel, nice machine. looks very sturdy. 16mm rods on the X ?
09:12 AM Loetmichel: elmo40: 25mm rods on the gantry
09:12 AM Loetmichel: still not thick enough ;)
09:14 AM jymmmm: 100mm ftw
09:14 AM elmo40: every time you increase the size you loose a little in work area. the bearing blocks take up more space.
09:15 AM jymmmm: oh, in that case 1000mm :) wwho needs workspace, eeeeeesh
09:16 AM _unreal_: I'm looking at SBR30 rails for my big cnc I"m building for work
09:16 AM Tom_L: 1000mm would be just about right
09:16 AM _unreal_: https://www.ebay.com/itm/1-X-SBR30-1300mm-30mm-Fully-Supported-Liner-Rail-2-pcs-SBR30LUU/262313856562?hash=item3d131fce32:g:EmYAAOSwrklVLR1-
09:17 AM _unreal_: Tom_L, the mounts for the BIG cnc for work 4' for Y
09:17 AM _unreal_: I figure rails like that should be :) decent enough for a machine that could cut aluminum
09:18 AM elmo40: i think round is not the way to go... not as the only item for support. it should be bolted to a plate then it won't 'need' to be even 25mm
09:18 AM elmo40: https://i.pinimg.com/originals/f5/60/a9/f560a90ecc0973f0cc78254ac9114d30.jpg
09:18 AM elmo40: like this
09:20 AM _unreal_: elmo40, I'm building a VERY big very tall cnc
09:20 AM _unreal_: the vertical arm is going to be 2'
09:20 AM elmo40: cast components?
09:20 AM _unreal_: no 1" aluminum plating
09:20 AM elmo40: not thick enough
09:20 AM elmo40: not enough density
09:21 AM _unreal_: lol
09:21 AM elmo40: you need a more dense material. there is a reason Mazak and the likes use cast iron
09:21 AM _unreal_: I'm not using cast iron
09:21 AM _unreal_: are welder is going to built I beams for my machine
09:21 AM _unreal_: using 1" aluminum plat
09:22 AM _unreal_: plate
09:23 AM _unreal_: The other option is to go with steel I beams
09:23 AM _unreal_: or square tube
09:24 AM elmo40: https://i.pinimg.com/originals/47/6d/ad/476dadb3d490601382c7ee3d0270b7f5.jpg
09:24 AM elmo40: check this tubing design
09:24 AM elmo40: it looks 'interesting' to say the least
09:24 AM _unreal_: moving gantry not fixed
09:24 AM elmo40: but i don't like it
09:24 AM elmo40: this can be either. just gusset the lower end.
09:25 AM elmo40: not my design. found it floating the web.
09:26 AM _unreal_: elmo40, THIS is the base https://drive.google.com/open?id=1n8QM01eo2tG-qUacvH3c_0KZn2RtR0VM
09:26 AM _unreal_: that everything is being bolted to
09:26 AM _unreal_: That is steal
09:26 AM _unreal_: steel
09:26 AM elmo40: this is what you should do! Epoxy Granit
09:26 AM elmo40: https://www.youtube.com/watch?v=rbqY8Mcbh0Q
09:27 AM _unreal_: it has I channel welded to the bottom as well 4 or 5 as I recall
09:27 AM _unreal_: freaking base is 110 lbs
09:27 AM _unreal_: alone
09:27 AM elmo40: meh
09:27 AM elmo40: too light
09:27 AM elmo40: there shoujldn't be anything on that machine that you can personally lift
09:27 AM elmo40: what size of machining area is it?
09:33 AM kritterr: Sorry to lean so heavily on this channel for basic CNC stuff, but can I ping a few EDM questions off of you guys?
09:34 AM kritterr: The first is, and I swear there's a reason for this - what operating parameters would one use to wear the electrode as badly and quickly as possible?
09:35 AM kritterr: The rationale for this is that if I use a circular rotating electrode, say a TIG electrode, I can just bring it near a piece of steel and rotate it to reprofile it so it's perfectly round.
09:36 AM kritterr: I'm not sure that will literally ever be necessary, it may just be faster to cut the rod in half and slot the new one in, so this is an academic question.
09:53 AM _unreal_: kritterr, wear them?
09:53 AM _unreal_: thats more of a welders question
09:54 AM _unreal_: Your more likely to get a motion control answer then that answer
09:54 AM _unreal_: but I could be worng
09:54 AM _unreal_: wrong
10:11 AM kritterr: lovely, windows 10 decided to randomly enable hibernation
10:12 AM kritterr: _unreal_, as in intentionally cause wear to the electrode in an EDM machine. Welding is (ideally) a continuous arc, and thus should wear only one spot on the electrode (ideally).
10:12 AM kritterr: With EDM, we have (ideally) considerably more arcs.
10:27 AM kritterr: Is there anything in particular wrong with using the cheap L298N stepper drivers? I have some and last time I tried, I let the smoke out so I don't think I really managed to evaluate it.
10:33 AM Loetmichel: kritterr: nope, if 2A and halfsteps are good enough for you L297/L298 is still a good decision
10:33 AM kritterr: More than good enough for me.
10:33 AM kritterr: 2A is way more than I need anyway
10:34 AM Loetmichel: there way better stepper drivers out there but no reason to throw away the old stuff
10:34 AM Loetmichel: to be honest my home CNC still runs with a l297/l398 three channel board
10:34 AM kritterr: It's for an EDM so there's (ideally) no load on any axis so I can use really lame steppers and drivers
10:35 AM kritterr: 3D printer level torque requirements at absolute most, I think
10:35 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12808&g2_imageViewsIndex=1
10:35 AM Loetmichel: back side of this: http://www.cyrom.org/palbum/main.php?g2_itemId=12811&g2_imageViewsIndex=1
10:35 AM kritterr: I remember that mill.
10:37 AM Loetmichel: point is: those steppers are 1,5A/phase direct drive on Tr10*3mm so the l297 are still viable there
10:40 AM kritterr: Do you drive it with parallel?
10:43 AM Loetmichel: yes
10:43 AM Loetmichel: pc underneaht looks like this: http://www.cyrom.org/palbum/main.php?g2_itemId=12265
10:43 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12250
10:43 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12247
10:44 AM Loetmichel: you can see the LPT above the network port
10:45 AM kritterr: I am told that I shouldn't use parallel in general, but yours seems to work fine
12:11 PM elmo40: Loetmichel, is this board used?
12:11 PM elmo40: http://www.cyrom.org/palbum/main.php?g2_itemId=12229
12:11 PM elmo40: or was that for testing?
12:20 PM Tom_L: pascalrs! fix yer connection!!
12:50 PM elmo40: Tom_L, you see JOINS/PARTS?
12:51 PM elmo40: you guys see this nonsense?
12:51 PM elmo40: https://www.armstrongeconomics.com/world-news/corruption/eu-considering-requiring-a-broadcaster-license-to-have-youtube-channel/
12:51 PM elmo40: how do they expect youtube to police uploads?
12:52 PM elmo40: what do they claim now? every second there is 5Hrs of video uploaded? how is that even remotely possible to monitor?
12:55 PM syyl: old hat
12:55 PM syyl: and you actually need a broadcasting license if you have a regular format on youtube/twitch/other platform and have a certain/large number of audience
01:32 PM _unreal_: Loetmichel, l398?
01:33 PM Loetmichel: _unreal_: typo. L297/L298 combi
01:34 PM _unreal_: ahh
01:34 PM Loetmichel: elmo40: nope thats an old pemtium1 board
01:34 PM _unreal_: I was googling I'm like got to be an error
01:35 PM Loetmichel: the CNC at home actually has a Core2duo 2.8ghz
01:35 PM Loetmichel: :-)
01:35 PM Loetmichel: on an industrial board from IEI
01:37 PM _unreal_: My first cnc used a 486 50mhz and turbocnc
01:37 PM _unreal_: worked wonderful
01:37 PM _unreal_: par port
01:37 PM _unreal_: 486 laptop at that
01:38 PM _unreal_: I even rigged up a harddrive to a diy stepper once. I got 72,000 RPM before the motor controller blew up and screwed up the par port..
01:39 PM _unreal_: that one kind of pissed me off. ended up using a pentium 120 I believe laptop and turbo again
01:49 PM net|: https://netpipe.ca/paste/paste.php?id=35
01:56 PM _unreal_: net|, What is that script for? A axis?
02:00 PM ve7it: _unreal_, the package made it to Canada... tracking is a bit cryptic, but I think it passed through customs this morning... now to get to the island with all the xmas nonsense in the way!
02:12 PM net|: _unreal_: try putting fav song through sox like that
02:58 PM net|: https://netpipe.ca/paste/paste.php?id=36
02:59 PM elmo40: ve7it, you live in Victoria?
02:59 PM elmo40: bunch of canukistanians in here, eh?
03:00 PM ve7it: _unreal_, about 2 hours drive north of there
03:00 PM ve7it: elmo40, sorry... wrong person answered!
03:02 PM elmo40: I am in Ontario
03:02 PM elmo40: never been out there. have distant family that way, though.
03:02 PM elmo40: i should travel Canada. there is SOOO much to see!
03:02 PM elmo40: maybe i'll win the lotto first... ;-)
03:10 PM net|: oops forgot the dirnames https://netpipe.ca/paste/paste.php?id=37
03:18 PM ve7it: elmo40, yes.. its a very big country and yes the lottery would help!
03:21 PM elmo40: ;-)
03:21 PM elmo40: very large country indeed
03:22 PM elmo40: takes forever to drive from Windsor to Montreal!
03:22 PM elmo40: let alone to B.C.
03:23 PM ve7it: yes, I would like to go visit a cousin in Atlin BC, but its a 3 day drive from here
03:25 PM elmo40: why 3 days?
03:25 PM elmo40: within the province??
03:25 PM elmo40: that is nuts...
03:45 PM ve7it: not any direct roads... kind of all the way from the bottom to the top of the province including a ferry ride to get off the island
03:48 PM ve7it: elmo40, google maps says 2700-2800km from here
03:53 PM elmo40: that is a long trip
03:53 PM elmo40: need to fly! ;-)
04:03 PM jymmmm: ve7it: Are you off grid?
04:05 PM ve7it: jymmmm, no.... pretty conventional setup here.... serviced lot, even has garbage pickup, water, gas, electrics
04:06 PM ve7it: I could see myself going off grid in another location.... too many people around here now... was much quieter when I built 30 years ago
04:07 PM jymmmm: ve7it: ah ok
04:07 PM ve7it: elmo40, yes, I can get a flight to whitehorse in the yukon, but its cheaper to fly to europe!
04:08 PM jymmmm: ve7it: Sometimes it's almost like I should be offgrid with blackouts and outages
04:10 PM ve7it: nice to have the best of both worlds... I have a couple of gensets here... our longest outage was 5 days, but that hasnt happened for about 10 years... just takes 1 bad storm ( or like last summer, fires)
04:13 PM jymmmm: ve7it: I've had a couple of 5 day blackouts this past year. But I'm tapperd into the BIG 250gal propane tank, so I have about 10 days of reserve plus I have 7 5gal propane tanks too
04:14 PM ve7it: I like propane... converted one of my honda generators to propane. It always runs and the gas doesnt go bad.
04:14 PM jymmmm: ve7it: did you but a kit?
04:16 PM ve7it: yes... new carb with controller hanging off it.. I dont run the genset all day... usually just a few hours at a time to keep the fridge and deep freeze cold. Wood stove keeps the place warm and cosy
04:23 PM jymmmm: ve7it: I have a Honda EU2000i, I saw a NEW kit that allows QC to the generator, and the stuff hangs off the tank instead.
04:25 PM jymmmm: ve7it: I also have a Duromax XP4850EH gas/propane/electric start. I run it about 18 hours a day non stop
04:25 PM jymmmm: ve7it: What honda do you have?
04:25 PM Loetmichel: ve7it: get your own (water) plane?
04:26 PM Loetmichel: and a PPL?
04:26 PM Loetmichel: i have a small 800W 2 stroke genny in the garage but never needed it so far
04:27 PM Loetmichel: longest blackout we had here was about half an hour and that was nearly a decade ago ;)
04:27 PM Loetmichel: germany.
04:27 PM ve7it: not sure its the older 1800w construction unit (read as noisy)... I got it when I was building off grid.. it was just big enough to run a skill saw (but not big enough to start my air compressor :{)
04:28 PM jymmmm: ve7it: Gotcha
04:28 PM jymmmm: I got VERY lucky, I had put a WANTED ad on craigslist, and someone was going back to mexico and needed the cash, I got it for $350
04:29 PM ve7it: Loetmichel, yes, Jymm and I live in the wilds of western north america!
04:30 PM jymmmm: Some 80yo lady hit my parked car about 40 minutes ago, just cosmetic (YAY STEEL BUMPER), and such a pita to file a claim
04:30 PM Loetmichel: yeah, you can say a lot of things about germany but the power grid is very stable and well maintained, despite the growing percentage of solar and wind and the shutdown of nuclear
04:32 PM Loetmichel: ve7it: yeah, i would like to do a gulidbook farm or PLFL, but sadly thats not an option in germany. WAY to much red tape to cut and way to expensive to get the plot in the first place
04:33 PM Loetmichel: guildbrook?
04:50 PM Deejay: gn8
05:03 PM veegee: Anyone know of a reference for structural strength of wood? Like tensile strength, shear strength, point load bearing strength for 2x4 and 4x4 lumber?
05:05 PM Javabean: yes please, if you find it could you link me as well
05:06 PM jdh: https://www.engineersedge.com/lumber.htm
05:11 PM mozmck: Also see this book: https://www.fpl.fs.fed.us/products/publications/specific_pub.php?posting_id=18102&header_id=p
05:17 PM _unreal_: ve7it, hi
05:17 PM _unreal_: looks like the package has reached vancouver
05:18 PM ve7it: yes... and I think passed customs
05:19 PM ve7it: there are usually 2 stops in Vancouver, the airport and the customs building and it has left 2 stopovers in Vancouver
05:23 PM _unreal_: I've never mailed anything out of country
05:23 PM _unreal_: so I assume if there are records kept I'm a clean slate. so its ether detailed review or hi/bye
05:24 PM _unreal_: that and I put a picture on the outside of the contents
05:24 PM _unreal_: and decliared 90% of it :)
05:25 PM _unreal_: I claimed $5 each for the motors and a dollar for each other item totaling $18
05:26 PM ve7it: good call
05:26 PM _unreal_: I mean what are they going to say.. they ARE used
05:26 PM ve7it: not sure what they thought of the picture.... I have never seen anyone do that before!
05:26 PM _unreal_: and the model numbers would be tracked to 2004-2006
05:27 PM _unreal_: so hehe used and item used by marine uses.... I'm sure $5 for each motor is generous in true value
05:28 PM _unreal_: no idea...
05:29 PM _unreal_: if it even raised any flags unless something happens I'm sure it would have been a quick glance at the package and the Xray and a wave of the hand
05:30 PM _unreal_: all but one item is sealed inside of zip lock bags. So its not like its highly likely to set off any sensors. unless it was radioactive :)
05:33 PM veegee: What's the best way to make a square cutout for a carriage bolt in wood on site
05:33 PM veegee: that is, not using a vertical mill
05:33 PM veegee: For softwood, you can just hammer the bolt into the wood and it'll stamp its way in
05:33 PM veegee: But it won't work for hardwood
05:37 PM jthornton: just make the hole a bit bigger for the square
05:37 PM jthornton: or taper it
05:38 PM _unreal_: veegee, you can also just use a corse rasp
05:38 PM _unreal_: OR use a square drill
05:38 PM _unreal_: YES it is real
05:38 PM veegee: rotary broach /may/ be an option
05:40 PM veegee: Ah yeah square hole drill is a thing
05:40 PM veegee: thanks
05:41 PM _unreal_: ve7it, back in a bit. taking my daughter to a light show.https://www.broward.org/Parks/Pages/eventsearch.aspx?=39
05:41 PM ve7it: _unreal_, ttyl
05:51 PM elmo40: ve7it, yes. flying to EU is less expensive than a local flight... volume is the big thing.
05:56 PM elmo40: mozmck, that website is a wealth of wood knowledge!
06:33 PM SpeedEvil: https://i.imgur.com/M4bxIAd.jpg how to level machines.
06:33 PM kritterr: Ah, rich people.
06:34 PM XXCoder: very safe
06:34 PM kritterr: My ex couldn't cook, but she once spent 15k on a refrigerator for her kitchen, and then it stood literally 1/4" out from the counters so she got rid of it and bought one that cost 24k.
06:35 PM kritterr: Rich folks do weird stuff.
06:36 PM XXCoder: lol
06:36 PM XXCoder: hope it was sold and not trashed
06:36 PM XXCoder: some people just trahs stuff
06:36 PM kritterr: Dunno. She had people for that sort of thing.
06:36 PM kritterr: By people I mean me.
06:37 PM kritterr: i had to wheel that heavy worthless piece of junk down to the truck
06:37 PM kritterr: She was 6'4" and didn't even help me.
06:37 PM kritterr: i mean she was actually a really good person but still rich folks do weird stuff
06:37 PM XXCoder: was you paid with ref?
06:38 PM kritterr: i was paid with my twisted sense of chivalry
06:38 PM kritterr: Rich folks are just weird. Ever seen them dove/quail hunt?
06:38 PM XXCoder: nope
06:38 PM XXCoder: I grew up very poor
06:38 PM kritterr: same
06:39 PM XXCoder: im goddamn rich now compared to back then
06:39 PM kritterr: They put out a bunch of folding chairs and then someone releases a bunch of doves and then they all shoot at once while sitting down
06:39 PM kritterr: and they keep score
06:39 PM kritterr: To my friend's credit, while he had to show up, he kept his shotgun on his lap and refused to participate.
06:40 PM kritterr: i don't think they're bad or anything, but some of their customs are strange
06:41 PM kritterr: well, hunting like that is bad
07:11 PM _unreal_: so my snuggly had fun
07:12 PM XXCoder: kritterr: I hope I never get that bored
07:13 PM kritterr: i hope i'm never a dove
07:15 PM XXCoder: https://www.amazon.com/gp/product/B0081NAQ5C/
07:16 PM XXCoder: some of reviews is...
07:16 PM kritterr: see i thought linuxcnc was less cool than this
07:16 PM kritterr: I usually contain my bizarre ranting to #reprap
07:17 PM kritterr: https://images-na.ssl-images-amazon.com/images/I/417Bd71BpIL.jpg
07:17 PM XXCoder: enjoy. http://theworstthingsforsale.com/
07:17 PM kritterr: this image makes me doubt my sanity
07:17 PM XXCoder: dont click on any of em
07:19 PM kritterr: they list this one https://www.amazon.com/gp/product/B00PY3OT5K/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00PY3OT5K&linkCode=as2&tag=drsynth-20&linkId=DMIH54K23TN647AB
07:19 PM kritterr: but do you know how many people i've met who have no idea how to read a tape measure
07:19 PM kritterr: Conservatively, nearly all of them.
07:20 PM XXCoder: nice. I can read tape measure but thats more readable
07:23 PM kritterr: At some point I need to drag out one of my little 3018 CNC mills and figure out how to make linuxcnc work with them
07:23 PM kritterr: I built them and then realized that apparently machinists do more than "save as stl -> import to slicer -> save to SD card"
07:23 PM kritterr: I thought I was so smart. Hey, I can 3D print, how hard can it be, right?
07:23 PM XXCoder: one of>?
07:24 PM kritterr: i have two
07:24 PM kritterr: I do not know why.
07:24 PM kritterr: Sometimes I get CNC-crazy when I'm inebriated so that's likely where it came from
07:24 PM XXCoder: fun
07:24 PM XXCoder: yours is likely same system as 3d printer
07:25 PM XXCoder: try connect it to proniterface or something
07:25 PM kritterr: I'm not sure I can get linuxcnc to work with it since I think they both have grbl boards already
07:26 PM XXCoder: yeah, can always strip it out, get BOB and 3 tb6600s
07:26 PM XXCoder: super cheap solition
07:26 PM XXCoder: they all total maybe $30?
07:27 PM _unreal_: horse floor lamp
07:27 PM _unreal_: wtf
07:27 PM kritterr: I don't really understand where 2D-CNC becomes 3D-CNC. I tried measuring my garolite boards (which is what I'm intending to mill because somewhere I found a large amount of garolite)
07:27 PM kritterr: and then i modeled it in Fusion, drew a dick on it, and extruded that down 1mm
07:27 PM kritterr: then realized it's subtractive not additive
07:27 PM kritterr: and was then lost
07:28 PM kritterr: Also, there's a small issue with it. I have an extremely large rotting alligator skull sitting on it right now.
07:28 PM kritterr: There's very good reasons for that.
07:28 PM XXCoder: everyone needs one lol
07:29 PM kritterr: So I need to move that and my girlfriend takes a dim, if realistic view of my moving wildlife carcasses around in the house.
07:30 PM XXCoder: I guess you plan to strip it and turn it into skull display?
07:30 PM kritterr: I was intending to turn the jawbone into lockpick handles.
07:31 PM kritterr: But it's got rotting flesh on it and...I don't know what to do about that in the Arctic?
07:31 PM kritterr: in the south, you just leave it outside and there you go
07:31 PM XXCoder: organic acid of some kind, kind that dont touch bones
07:32 PM XXCoder: "* Pour hydrogen peroxide over the bones and watch it foam. Continue to pour until foaming ceases."
07:33 PM XXCoder: im pretty sure fbi is looking at me now
07:33 PM kritterr: h2o2 makes bone brittle
07:33 PM XXCoder: apparently theres beetles, special ones too
07:33 PM XXCoder: other way is boil it 15 to 30 min apparently
07:34 PM XXCoder: make yummy rotten alligator skull soup
07:34 PM kritterr: what fer oxidizin some of the Ca into CaO and then it turns into CaCO2
07:34 PM elmo40: how does that smell??
07:34 PM XXCoder: "sal soda" in water
07:34 PM kritterr: Dunno, I guess I can't smell rotting gator anymore.
07:34 PM XXCoder: dunno elmo I dont know what anything smells like
07:35 PM kritterr: You stop noticing it when you're around it all day, like burning macaques
07:35 PM kritterr: I doubt I can boil a skull this size.
07:36 PM kritterr: real quick, if i wanna carve random crap into wood/garolite on my CNC, uh
07:36 PM kritterr: what's the toolchain i use
07:36 PM kritterr: I got it for making PCBs but I don't have any PCBs I need to make
07:36 PM kritterr: well i need to make a 555 timer circuit
07:36 PM XXCoder: engrave some random shit
07:37 PM kritterr: I'd like to, but...uh, how?
07:37 PM kritterr: (also ideally all open-source)
07:37 PM elmo40: kicad?
07:37 PM XXCoder: linuxcnc have picture to engrave
07:37 PM XXCoder: inkscape have vector image to gcode
07:37 PM elmo40: https://www.kicad-pcb.org/
07:40 PM kritterr: I should probably start with images
07:41 PM kritterr: So it turns an image into gcode, right?
07:41 PM XXCoder: yeah
07:41 PM XXCoder: black can be deepest cut or most shallow
07:41 PM XXCoder: it have lots options
07:46 PM kritterr: Alright, I'll try that
07:46 PM kritterr: moving alligator carcass
07:46 PM kritterr: I use eagle right now
07:47 PM kritterr: but I am not especially attached to it
07:49 PM XXCoder: https://youtu.be/fXXJ1LOqHEk fancy
07:50 PM kritterr: jansen linkleage
07:50 PM _unreal_: kritterr, what do you need a 555 for?
07:50 PM XXCoder: I wonder if can add front too lol
07:51 PM XXCoder: somehow make it steerable
07:51 PM _unreal_: kritterr, are you new to cnc?
07:51 PM _unreal_: cncing?
07:52 PM kritterr: 1) Timer for an EDM power supply and 2) yes
07:52 PM _unreal_: what kind of timer
07:53 PM _unreal_: kritterr, give you an idea of some good learning stuff https://drive.google.com/open?id=17cPUDX1fNOqbbAapSJfnTUk01TudD3sX https://drive.google.com/open?id=17ecATsMoawlmlPQOTMZ8DFFBhJOeRe-6 DIY HOLD DOWNS
07:53 PM elmo40: images to g-code? there are apps for that
07:53 PM _unreal_: https://drive.google.com/open?id=1D-k13xqrv-9Z-6ok8anqo4-VMt7iCLG4
07:54 PM _unreal_: kritterr, stuff for work https://drive.google.com/open?id=1D35kqiMnAK0GH_AaEDkLZkmSJAxKPVKH https://drive.google.com/open?id=1DGSfzLhsRSR3ifz4o1mIDvj3MzQsHgmc
07:54 PM kritterr: _unreal_, basically i need to be able to control the arc's on and off time independently
07:54 PM _unreal_: define TIME.....
07:55 PM kritterr: Depends on the material.
07:55 PM _unreal_: heh
07:55 PM kritterr: But say, 10us on and then 30us off.
07:55 PM _unreal_: there ya go
07:55 PM _unreal_: now I know what your talking about
07:55 PM kritterr: So I'm running an open loop circuit that will do that naively
07:55 PM _unreal_: you dont want a 555
07:55 PM kritterr: no i totally do
07:55 PM _unreal_: no you dont
07:55 PM kritterr: cuz i already designed that circuit
07:55 PM kritterr: and built it
07:55 PM kritterr: and it worked
07:55 PM kritterr: then i threw it away
07:56 PM kritterr: I think.
07:56 PM _unreal_: you want an arduino... that way you can do the same thing and have a small display showing you exactly what its doing
07:56 PM kritterr: well, if i'm using an arduino i'd go closed loop
07:56 PM _unreal_: and?
07:56 PM kritterr: and i'm not smart enough to design that
07:56 PM _unreal_: and how where you telling what your outputs were using a 555
07:57 PM _unreal_: or 556
07:57 PM kritterr: Pots.
07:57 PM _unreal_: POTS dont tell you anything they ADJUST
07:57 PM kritterr: Oh, you mean how am I gonna tell what the delay is
07:57 PM kritterr: Stickers on the dial and my oscilloscope
07:57 PM _unreal_: what did/do you use to ensure what your values are as your adjusting
07:57 PM _unreal_: O SCOPE
07:58 PM kritterr: SKOPE
07:58 PM _unreal_: so as I said you TOTALLY want to use something like an arduino
07:58 PM _unreal_: with a smal i2c LCD
07:58 PM _unreal_: not much for code as well
07:58 PM kritterr: Basically, because the arc initiates with a random delay (well, random to us), so if I wanted to do this right, I'd find some way to get the arduino to sense when exact the arc initiates (likely a voltage drop and current spike) and THEN run it for 10us
07:59 PM kritterr: but i'll start it open loop
07:59 PM kritterr: then bust out my arduinos
07:59 PM kritterr: Try both.
07:59 PM _unreal_: that can be done
07:59 PM kritterr: No reason not to.
07:59 PM kritterr: It definitely can be done.
07:59 PM kritterr: the question is
07:59 PM kritterr: can *I* do it
07:59 PM _unreal_: the only catch to using the arduino is having isoation like opto's
07:59 PM kritterr: The answer to that is, alas, a bit less clear
08:00 PM _unreal_: in the case of your project
08:00 PM kritterr: the way i was gonna sense the arc is to basically have the arduino act like a voltmeter
08:00 PM kritterr: so 0v, short circuit
08:00 PM _unreal_: kritterr, if you talk to ve7it, he may be able to help you code wide
08:00 PM _unreal_: wise
08:00 PM kritterr: high voltage, no arc
08:01 PM kritterr: Then when voltage is something low but nonzero, that - to me - means we're arcing.
08:01 PM kritterr: Right?
08:01 PM _unreal_: and I'm sure there is already code online that would work for exactly what your trying to do
08:01 PM kritterr: You might be surprised.
08:01 PM kritterr: Let me know if you find it, because I've looked.
08:01 PM _unreal_: kritterr, I dont know the working specs of your machine but yes I would assume anything below a certian thresh hold would be strick/arc
08:02 PM kritterr: From my books, it seems that 8v is the sweet spot, and at 9.5v, you're said to be arcing.
08:02 PM kritterr: All the way down to 2v.
08:03 PM kritterr: However, old people wrote those books so they advise me to use a window comparator (lol)
08:03 PM kritterr: yeah lemme just generate eleven different reference voltages
08:04 PM kritterr: That said, I'm not sure there's anything wrong with running it open loop
08:04 PM kritterr: since arctime_open < arctime_closed, I'll just remove material slower with the open loop than the closed loop. Nicer surface finish too.
08:04 PM kritterr: I could certainly use an arduino as a pulse generator
08:05 PM kritterr: and indeed, i probably will
08:05 PM kritterr: but i'll try this as well
08:06 PM kritterr: I'm not an expert so I do appreciate your advice though
08:06 PM _unreal_: kritterr, https://www.researchgate.net/publication/276294819_Simple_EDM_Process_Duration_Measurement https://forum.allaboutcircuits.com/threads/complete-a-edm-circuit.133800/ https://hackaday.io/project/3232-not-your-fathers-edm
08:06 PM kritterr: I have every one of those pages basically memorized
08:06 PM _unreal_: kritterr, last link is interesting
08:06 PM kritterr: oh
08:07 PM kritterr: except the first
08:07 PM kritterr: yeah that machine is cool
08:07 PM kritterr: idk if it's worth it to put in the effort to try to run it closed loop though
08:07 PM kritterr: I mean, the technology was invented by drunken russians trying to make a more communist light switch
08:08 PM _unreal_: drunken.... brb
08:09 PM _unreal_: kritterr, as I said ve7it is likely a very good resource to talk to...
08:09 PM kritterr: for EDM or for coding?
08:09 PM kritterr: Or for both?
08:09 PM _unreal_: speaking of. ve7it would be cool if that package shows up by christmas
08:09 PM _unreal_: coding
08:09 PM _unreal_: maybe both but coding for sure
08:09 PM kritterr: I'm relatively halfway competent when it comes to coding
08:10 PM kritterr: as long as it's in C and nobody else has to read it (so arduino sketches are fine)
08:10 PM _unreal_: you'd love my butchered coding
08:10 PM kritterr: What I don't truly understand is what I'm trying to do in terms of sensing the arc and what to do with that information
08:10 PM kritterr: I likely would! The more your coding looks like the IOCC, the more I like it
08:11 PM _unreal_: its the voltage is at or below a certain level you could likely just use a sense resistor and the analog inputs. OR use a logic chip to read the voltage and feed a signal that is safer for the arduino
08:12 PM kritterr: also i know how to generate my power
08:12 PM kritterr: but i'm not 100% sure what to do after that
08:12 PM kritterr: Cram it into some caps I guess
08:12 PM kritterr: and then put a mosfet in front of them
08:12 PM _unreal_: I setup an attiny85 to read a thermistor, run a fan with PWM. read the rpm tick and give alarms IF the RPMs are two low, or the TEMP is too high. and adjust the speed according to the temp.
08:12 PM kritterr: and then make the arduino drive it?
08:13 PM _unreal_: ya
08:13 PM kritterr: I also don't think I have suitable caps
08:14 PM _unreal_: I dont know much about EDM. but I would assume high capacity ceramics...
08:14 PM _unreal_: something that can handle high rates of change and spikes
08:14 PM kritterr: It's 150v @ like max 30A (at a much lower voltage)
08:15 PM kritterr: It's really not even as cool as a DC welder.
08:23 PM _unreal_: I'm currently designing squares to cut from 1" HDPE for legs for my new cnc machine
08:23 PM kritterr: _unreal_, i wrote an algorithm down, take a look at it and see if you think i understand please?
08:23 PM _unreal_: I get TONS of Starboard
08:24 PM _unreal_: I'll look. but I'm not expert at coding
08:25 PM kritterr: wtf
08:25 PM kritterr: pastebin is down
08:25 PM _unreal_: love it when that happens
08:25 PM kritterr: And it's just text
08:25 PM kritterr: I can code it, it's just that I'm not 100% clear on what it is I need to do
08:27 PM kritterr: https://pastebin.com/mY5UNjFt
08:27 PM kritterr: This is how I'd run it closed loop.
08:27 PM kritterr: If I was going to do that.
08:27 PM kritterr: Which I might.
08:27 PM kritterr: linuxcnc is really, really convenient for this btw
08:28 PM kritterr: other implementations would have needing the arduino to take over gcode from time to time to run it backwards
08:28 PM kritterr: linuxcnc makes it way easier
08:35 PM kritterr: i'm really not sure it's even necessary though.
08:36 PM kritterr: I think open loop arc control is probably completely acceptable for home use.
08:36 PM _unreal_: looking
08:36 PM XXCoder: https://pastebin.com/i/503.jpg lol
08:36 PM _unreal_: ever sense fusion360 changed there menus is really been throwing me
08:37 PM kritterr: XXCoder, just dragged my cnc mill out
08:37 PM kritterr: and wtf
08:37 PM _unreal_: typical cat is looking at pussy
08:37 PM kritterr: i have a dial indicator?!?!?!
08:37 PM XXCoder: lol
08:37 PM kritterr: Where the hell did I find a dial indicator
08:37 PM XXCoder: "found" ;)
08:37 PM XXCoder: kidding
08:38 PM kritterr: woke: breaking into the machine shop to borrow tools
08:39 PM XXCoder: lol
09:09 PM _unreal_: XXCoder, I think I've found my rails
09:09 PM _unreal_: https://www.ebay.com/itm/1-X-SBR30-1600mm-30mm-Fully-Supported-Liner-Rail-2-pcs-SBR30LUU/141909504888?hash=item210a773378:g:EmYAAOSwrklVLR1-
09:09 PM XXCoder: sbrs
09:09 PM _unreal_: for the big machine
09:10 PM XXCoder: 1600m not too bad
09:10 PM XXCoder: 1.6m
09:10 PM _unreal_: 1600?
09:10 PM XXCoder: 5.35 ft
09:10 PM XXCoder: erm mm lol
09:10 PM _unreal_: OH SORRY wrong link https://www.ebay.com/itm/1-X-SBR30-1300mm-30mm-Fully-Supported-Liner-Rail-2-pcs-SBR30LUU/262313856562?hash=item3d131fce32:g:EmYAAOSwrklVLR1-&autorefresh=true
09:11 PM XXCoder: 4.27 ft
09:12 PM _unreal_: I'd like to find that LOCAL
09:12 PM _unreal_: USA that is but nothing. and price wise NOTHING even close
09:12 PM XXCoder: I have sbrs but its too short for you
09:12 PM _unreal_: I need 4'
09:12 PM _unreal_: and AT LEAST 30mm
09:13 PM XXCoder: yeah mines like 2.5 ft something? forgot lol 600mm something
09:13 PM XXCoder: and its not 30mm
09:13 PM XXCoder: https://www.ebay.com/itm/250729742630
09:13 PM XXCoder: this is what I have
09:13 PM _unreal_: the company I paid to build some of the parts
09:14 PM _unreal_: is mounting 4' 4x4" aluminum square tubing to the short sides of this base https://drive.google.com/open?id=1n8QM01eo2tG-qUacvH3c_0KZn2RtR0VM
09:14 PM XXCoder: ya I remember that
09:14 PM _unreal_: so it should have about +14"
09:14 PM _unreal_: on ether end
09:15 PM _unreal_: I'll be mounting angle aluminum to make up the open gaps to mount the waste board
09:15 PM elmo40: i had a pair of massive linear rails after the company did a refit on the Mazak. They were ~10' long and real heavy!
09:15 PM _unreal_: XXCoder, I may be interested in those rails for Z MAYBE
09:15 PM elmo40: the brother-in-law left them outside over the weekend........ i was so pissed.
09:16 PM XXCoder: unfixable rust?
09:16 PM elmo40: they didn't have the 0.0005" tolerance anymore so they scrapped them. would be most excellent for a router table!
09:16 PM elmo40: yes. it was the Autumn. leaves and rain + ground steel == GARBAGE
09:18 PM XXCoder: :(
09:18 PM XXCoder: _unreal_: im not sure how to ship them
09:19 PM _unreal_: heh
09:19 PM _unreal_: same way they all get shipped
09:19 PM _unreal_: wrap with bubble wrap. and go into a tube. OR square tube box
09:20 PM XXCoder: I also have ballscrews
09:20 PM XXCoder: same sizes
09:20 PM _unreal_: I'm likely to need custom sizes
09:21 PM _unreal_: next week when/IF my Xwife takes are daughter. I'll have a few days free
09:21 PM _unreal_: and I'm going to go nuts
09:21 PM XXCoder: :)
09:21 PM _unreal_: cnc'ing stuff
09:21 PM _unreal_: building that is
09:22 PM _unreal_: I cant do shit right now
09:22 PM XXCoder: im been jammed for 2 years now. no room to run my cnc machine
09:22 PM _unreal_: every time I even touch some cad DAD....... BLA BLA BLA BAL.....
09:22 PM XXCoder: thats why i got laser toy, its tiny and something to do
09:22 PM _unreal_: shut up GO AWAY...
09:22 PM _unreal_: heh
09:22 PM XXCoder: lol
09:23 PM _unreal_: I just gave her a learn linux book
09:23 PM _unreal_: told her read it or else
09:23 PM _unreal_: been quiet for like 10min so far
09:23 PM _unreal_: though now I'm trying to finsh making din
09:23 PM _unreal_: err.. waiting for it to finish cooking
09:30 PM _unreal_: and she's on page 20
09:34 PM Tom_L: _unreal_, careful she might outsmart you soon
09:35 PM XXCoder: what she isnt already smarter?
09:37 PM XXCoder: https://www.youtube.com/watch?v=X2h_yHnTwVw
09:37 PM XXCoder: landspeeder, real one
09:37 PM XXCoder: though its one of those annoying " on your face" videos
09:39 PM Tom_L: meh
10:15 PM _unreal_: heh
10:15 PM _unreal_: XXCoder, she isnt a 5th grader yet
10:15 PM _unreal_: OH WAIT.....
10:15 PM _unreal_: DAMN IT
10:17 PM _unreal_: XXCoder, That guy annoys me
10:17 PM XXCoder: the landspeeder one> yeah
10:38 PM _unreal_: sigh
10:38 PM _unreal_: trying to figure out how I want to setup the little perf board
10:38 PM _unreal_: it is going to be the "helper brain" or my daughters mini cnc machine
10:38 PM _unreal_: going to have a few small features on it.
10:39 PM _unreal_: and be the convergence board for a few areas of wiring. including estop etc... stoff
10:39 PM _unreal_: stuff
10:46 PM XXCoder: cool :)
10:49 PM XXCoder: coooool https://vimeo.com/321319194
10:54 PM _unreal_: What type of square linear rail would be equal to sbr30?
10:56 PM XXCoder: good question
10:56 PM XXCoder: note that sbr load support isnt equal on all sides
10:56 PM XXCoder: highest is though block into rail
10:57 PM XXCoder: less so is sides and worse is outwards\
10:58 PM _unreal_: I was looking at adding a bearing wheel to the bottom of the square tubing
10:59 PM _unreal_: just to aid in pitch moment
10:59 PM _unreal_: BUT I'm not to concirned with the lateral moment the frame will likely be stiff enough. also I'm looking at using the SBR30LUU blocks
10:59 PM _unreal_: if I go with those
11:00 PM _unreal_: I will go with what ever is cheapest
11:00 PM _unreal_: I only have about $1500 I can blow on this project and a good chuck is tied up rith now just in making the base
11:00 PM _unreal_: Part of the reason why I've been going nuts wanting to get this new home machine built
11:01 PM _unreal_: I'm loosing money with a lot of projects I COULD do but cant do to the size of my current machine
11:01 PM XXCoder: just tighten that up
11:03 PM _unreal_: ?
11:05 PM _unreal_: trying to find a guide that shows different types and there naes
11:05 PM _unreal_: names
11:05 PM _unreal_: like the sqaure blocks that have rollers instead of bearings and bearings and the different ypes etc..
11:09 PM _unreal_: this is the best guide I've found so far but I wish it was far more compact https://www.hiwin.com/pdf/linear_guideways.pdf
11:13 PM XXCoder: you said loosing
11:13 PM XXCoder: :)
11:13 PM _unreal_: ?
11:13 PM XXCoder: loosing - something getting loose
11:13 PM XXCoder: losing - something getting lost
11:51 PM _unreal_: quiet
11:51 PM _unreal_: sigh
11:51 PM _unreal_: oh heh its almost 1am
11:51 PM _unreal_: no wonder
11:52 PM XXCoder: 9 pm here lol
11:55 PM _unreal_: yawn
11:56 PM _unreal_: there just finished drawing my feed for my new machine