#linuxcnc Logs
Jan 21 2019
#linuxcnc Calendar
01:16 AM XXCoder: SpeedEvil: dang
01:20 AM XXCoder: thats hefy table
01:20 AM XXCoder: can floor bear up to it? LOL
03:19 AM SpeedEvil: :)
03:23 AM XXCoder: onestly ooks great, subbed to channel
03:23 AM XXCoder: not that I will eber make such a huge overkill table
03:23 AM XXCoder: if it was made as dining table it will last hundreds of years
03:58 AM PL7icnc: Hi all
03:58 AM PL7icnc: Back in Business for this Year
03:59 AM PL7icnc: Loetmichel, bist du Hier
04:50 AM jthornton: morning
04:51 AM XXCoder: morning
05:19 AM Deejay: moin
05:21 AM Loetmichel: hihi, that PL7icnc... not quite the patience
05:22 AM Loetmichel: 1 miute, off :(
07:59 AM Wolfmetalfab is now known as Wolf__
08:47 AM * JT-Shop gets a fire going in the shop
10:19 AM Connor: So, anyone have any other thoughts on why my motor on the bridgeport would speed up/ slow down when turned on in backgear high-pulley, 30hz? I used the word cogging, but, that might not be the correct term.. the speed was erratic..
10:44 AM CNC_Brian: Conner, is LinuxCNC controlling the speed of the motor?
10:44 AM gregcnc: so it wasn't the pot?
10:45 AM gregcnc: which VFD?
10:54 AM justan0theruser is now known as justanotheruser
11:58 AM ktchk2: 拿天vecamagain
11:58 AM ktchk2: nativecam again
12:23 PM laminae_: Hey guys, start a fairly large co2 laser build with a cutting area of 4ft x 3ft (might end up being a little more than 3ft but i need a minimum of 2.5 feet) and i need the 3ft dimension to be my y axis
12:24 PM laminae_: I would like to use a driven nut on a large diameter leadscrew or a ball screw but i just can't seem to find them commercially available
12:24 PM laminae_: THK, hiwin and other major players make them but not for the little guy like me
12:25 PM fragalot: ebay lists quite a few chinese ones
12:25 PM fragalot: but for a laser, would you not be better off with a low inertia belt drive?
12:26 PM laminae_: Due to the large dimensions i need the tube to be on the x axis, so the tube is always in motion
12:26 PM laminae_: A lot more mass than i want to swing on a belt
12:26 PM gregcnc: So they are available just expensive?
12:27 PM laminae_: I would pay pretty well for a quality one, that and the hiwin rails are the soul of this thing, i just can't find a known quality supplier
12:28 PM fragalot: gregcnc: laminae_'s problem is the same one I always have: they exist, but you can not for the life of you find a supplier that sells to private persons.
12:28 PM gloops: never used native cam, Ichs was the man for that
12:28 PM gregcnc: even if you have money?
12:28 PM Rab: laminae_, check used...your application might benefit from a high-pitch leadscrew, which is a bit exotic for the budget market.
12:29 PM laminae_: THK did reply to my email but they basically said i would either need to have a large account with them
12:30 PM fragalot: gregcnc: Even if you have money. The criteria is "do you have a VAT number?"
12:30 PM Rab: High-pitch is less desirable for DIY applications because, all other things being equal, it means lower resolution. Not as big a deal in a raster application. There might be some deals to be had.
12:30 PM laminae_: Rab: tha tis definitely an option, but even then, i have to set up the leadscrew to be driven,
12:30 PM gregcnc: ah, the tax issue, yes occasionally you run into that in the US
12:31 PM laminae_: I use a kern HSE at work a ton and that uses a high pitch leadscrew
12:31 PM Rab: laminae_, sorry, I missed the driven nut part.
12:31 PM laminae_: The real trick i am trying to avoid is whip
12:31 PM laminae_: All good
12:32 PM laminae_: I would be open to leadscrew driven nut though if i could find it
12:32 PM fragalot: could you not modify a standard one?
12:32 PM Rab: ^^
12:32 PM gregcnc: are the specs that far from what's available on Ebay, etc.?
12:33 PM laminae_: I did look at that possibility but even if i buy a radial bearing block for the nut i'll need flanges
12:33 PM gloops: laminae_ sbr 16 rails, 16mm ballscrews - 2 on Y
12:33 PM laminae_: Misumi might have something i can cobble together and i may end up going that route but i was hoping i was missing an obvious better choice
12:33 PM gloops: £200
12:34 PM gloops: youll be good to .05mm give or take ..
12:35 PM laminae_: That still leaves me whipping at speed though
12:35 PM gloops: what speed is required?
12:35 PM laminae_: sec, gotta reference table
12:36 PM gregcnc: it's all compromise, lead, rpm, screw dia, cost
12:36 PM fragalot: obtainability
12:36 PM Rab: laminae_, how fast does your axis need to move?
12:36 PM Rab: And will your tube survive? :)
12:36 PM gloops: the chinese will meet the Dear Friends requirements
12:39 PM gloops: 1200 between bearings, 16mm screw should be good for 5000mm/min probably more
12:40 PM gloops: with 20mm screw 7500mm/min
12:40 PM laminae_: off the table goal would be 20k but that would not be a common use
12:40 PM fragalot: big inertia swinging that bar back & forth though, gloops
12:41 PM laminae_: The bulk of this would be high speed cutting foam
12:41 PM gloops: with double bearings both ends 20mm screw = 10000mm/min
12:41 PM fragalot: laminae_: have you considered one of those reduced backlash belt rack&pinion hybrid setups?
12:41 PM laminae_: Pretty much the same stuff i did in the past but for my own business instead of air force stuff
12:41 PM laminae_: Pretty much the same stuff i did in the past but for my own business instead of air force stuff
12:41 PM fragalot: I forgot the name >.>
12:42 PM fragalot: http://www.motioncontroltips.com/wp-content/uploads/2013/11/servo-belt-linear-actuator.jpg <== that
12:42 PM gregcnc: if you have a business, don't you have a VAT#?
12:42 PM Rab: fragalot, ServoBelt? https://www.bell-everman.com/products/linear-positioning/servobelt-linear-sbl
12:42 PM gloops: my screws are 1150 and i get 5000mm/min
12:42 PM fragalot: Rab: I believe so, yes :-)
12:42 PM laminae_: I'm not to familiar with that, is the the cncrouterparts method?
12:43 PM gloops: also this is considering 5mm pitch, if you went for 2010 screws youll be flying
12:43 PM fragalot: laminae_: I'm not sure. servoBelt is a commercial implementation of it that I believe to have incredible performance
12:43 PM Rab: laminae_, some info on a DIY level: https://www.cnczone.com/forums/linear-and-rotary-motion/59570-forum.html
12:44 PM gloops: belt is a pain compared to screws though
12:45 PM Rab: Performance I believe is very good, but it doesn't scream low inertia to me because you have to move the motor(s). But it could be inverted so the motor is stationary.
12:45 PM fragalot: Rab: it's low inertia compared to a driven nut ballscrew.
12:46 PM fragalot: speeds can go up to 240000mm/min according to the datasheet
12:46 PM * fragalot sprinkles some salt around
12:46 PM Rab: fragalot, you're moving either the motor or a rigid belt support rail. I'll bet it's not a huge win.
12:47 PM Connor: It's 100% manual. It's not the POT.
12:47 PM Connor: LAPOND New Series VFD Inverter VFD Drive 1.5KW 220V 2HP 7A,Variable Frequency Drive for Motor Speed Control (1.5KW)
12:47 PM fragalot: Rab: with driven ballscrew, you are also moving the motor -- just comparing to what laminae_ originally talked about
12:48 PM Rab: fragalot, nut-driven ballscrew? I believe the ballscrew moves while the motor is stationary (and the nut rotates).
12:48 PM Rab: That is, screw isn't turning, but you have to move its mass back and forth.
12:49 PM gloops: 4ft is not beyond rotative screws
12:49 PM Rab: Connor, could there be a purely mechanical problem like bad bearing manifesting in back gear?
12:49 PM fragalot: Rab: I see. never mind then :-)
12:49 PM Connor: Maybe. But, I don't hear anything to indicate that.. and if I turn it up to 60hz and try it.. it worked fine..
12:50 PM Connor: Maybe I need to recreate it, video it and check with the VFD manufacture..
12:50 PM gloops: https://www.ebay.co.uk/itm/EU-6Pcs-SBR16-Linear-Rail-Guide-3-RM1605-350-750-1150mm-Ball-Screw-c7-Nut-Block/273631594385?
12:51 PM gloops: these sets are sound, one parcel start building
12:51 PM laminae__: gagh
12:51 PM laminae__: Sorry, you lost me
12:51 PM laminae__: On a work trip to texas horrible internet
12:51 PM gloops: either way 2 screws will be needed for the bed axis
12:52 PM laminae__: I'm more or less emulating the single drive train of the hse
12:52 PM Rab: Lol, their bearing race has rust in the picture: https://i.ebayimg.com/images/g/HP8AAOSwZG9Wjclo/s-l1600.jpg
12:53 PM laminae__: Which is another reason i have to rigid mount the drive and use a driven nut
12:53 PM gloops: nobody is going to see that Rab
12:53 PM gregcnc: the rust enhances the seals performance
12:54 PM gloops: pff driven nut is a lot of work
12:56 PM laminae__: Even if it is double the cost, it greatly simplifies the design and reduces points of failure and this thing is going to be ridden pretty fast and pretty hard
12:56 PM laminae__: I'm already throwing about 5000 bucks into the build anyway
01:00 PM gloops: so you arent having 2 drives on any axis?
01:01 PM laminae__: if you're wondering why i'm pushing on this specific design so much, my material comes in 4x8 sheets, i can throw the whole sheet on with the vaccume table and cute to length without any additional tools or steps on the laser
01:01 PM laminae__: Correct
01:01 PM gloops: thats reasonable thinking
01:02 PM laminae__: Two nema 23 motors hopefully
01:02 PM gloops: but consider this - the gantry is moving at 10000mm/min, the laser is far to one side, now in an instant the gantry stops and reversed - that gantry is going to rack
01:02 PM laminae__: I have found this https://www.cnczone.com/forums/diy-cnc-router-table-machines/147509-phifes-fixed-gantry-ridgid-z-rotating-nut.html
01:03 PM gloops: it cant rack if it has 2 screws, one either side
01:04 PM laminae__: The head is only a few ounces, i see your point but i haven't encountered it as an issue on the machines i have used
01:05 PM gloops: a few ounces on a 2ft lever
01:09 PM gregcnc: https://www.ebay.com/itm/392218679939
01:11 PM gregcnc: maybe a little big
01:12 PM laminae__: Yeah, that puppy is a monster, good find though
01:12 PM laminae__: thk makes a 16mm that would be perfect if i can find it
01:13 PM laminae__: Parker also has one
01:13 PM laminae__: Some odd ball imperial ones i would like to avoid too though
01:13 PM gloops: theres no need for all that heavy duty clobber with a laser
01:14 PM laminae__: yeah, yeah, 16mm will be all the muscle i ever need
01:15 PM Jymmm: 512MB is all the ram you'll ever need
01:15 PM laminae__: I found a similar vacuum table build using a 12mm leadscrew. the builder turned all his bushing on a lathe, which is probably the smart way to do all this
01:16 PM laminae__: I'm looking through all that misumi stuff now, might end up being the best way
01:16 PM fragalot: Jymmm: most of the controllers I often work with have 12K ram........
01:17 PM gloops: the bottleneck for speed is more likely to be the nema 23 motors
01:17 PM fragalot: 512MB is just luxury
01:17 PM * fragalot imagines actually being able to open a file in a single go rather than having to resort to streaming based parsing
01:17 PM gloops: 1 400 oz stepper on the gantry?
01:19 PM laminae__: brb
01:20 PM gloops: well i tested my 10 degree v bits, 0.2 mm tip https://www.youtube.com/watch?v=5opDkYEeZ08
01:21 PM Jymmm: fragalot: I'm joking
01:21 PM fragalot: Jymmm: :-)
01:21 PM fragalot: I'm not :(
01:21 PM gloops: first learning thing - on fitting to the collet bit went straight through finger to the bone
01:22 PM gloops: dont nudge them or press them...
01:28 PM gloops: conclusion - it is practical to use these on wood, even with chinese screws, i could make jewelery with this https://ibb.co/JmSS3vv
01:31 PM Loetmichel: gloops: if they are HSS they will not live long in wood though
01:32 PM gloops: solid carbide - allegedly
01:32 PM Loetmichel: that should work
01:32 PM gregcnc: you should be able to tell if you have them in hand
01:32 PM Loetmichel: indeed
01:33 PM Loetmichel: TC should be about thrice as heavy as steel
01:33 PM gloops: they are carbide i think
01:33 PM Loetmichel: oh sorry, carbide only twice as heavy
01:33 PM Loetmichel: plain tungsten is thrice
01:38 PM gloops: they dont weigh anything anyway
01:40 PM Sabotend_ is now known as Sabotender
01:48 PM Loetmichel: gloops: i have a LOT of 1/8" TC bits
01:48 PM Loetmichel: and a few HSS bits in the same size
01:48 PM Loetmichel: in direct comparsion you CAN feel the difference
01:49 PM gloops: well i have nothing this size of HSS to compare with, they literally dont register any feeling of weight in my hand
01:50 PM gloops: smaller than a match stick
01:51 PM gloops: i looked at the tip with a magnifying glass after i ran a few tests, i couldnt see anything had changed, only .25mm passes in pine though
01:52 PM gregcnc: magnet, carbide is only marginally magnetic compared to HSS
01:52 PM gloops: i dont suppose it matters theyre 50 pence each
01:54 PM gloops: https://www.ebay.co.uk/itm/10X-10-degree-0-1mm-engraving-drill-bit-CNC-router-tool-V-shaped-alloy-PCB-board/352505289911?
01:54 PM gloops: 40 pence each
02:15 PM gloops: these sellers are selling for the chinese suppliers, they start an ebay shop and the chinese fill it with stuff for them, they make a few pennies on a sale
02:16 PM laminae_: The vast majority of the small scale cnc market is using chinese components
02:17 PM laminae_: Although there are a ton of guys in here that have modified traditional mills and other manual machines to be cnc
02:18 PM gloops: its good enough for many applications, router, laser, plasma, printer
02:18 PM gloops: if you want serious .000 tolerances then obviously no
02:19 PM laminae_: It would be pretty interesting to know the breakdown but i would guess that the majority of the guys here are small privately owned businesses and hobby business and for most of us, the ability to source and supply something when we need it is pretty important
02:20 PM laminae_: Oh don't get me wrong, i have chinesium spindles and other stuff too and i've been mostly happy with them
02:20 PM laminae_: It makes producing a quality machine at a reasonable pric epossible
02:21 PM gloops: well they dump a lot of stuff on the european mainland so delivery isnt usually too long for us in the UK
02:22 PM laminae_: I'm in USA so slow boat is a bit longer for me but not to horrible
02:22 PM CaptHindsight: https://postimg.cc/K3LNV5tp 40mm x 1.4m-5mm/rev
02:22 PM laminae_: Over the last three years everything has become more available, i think 3d printing opened the door for other markets
02:23 PM laminae_: that's a tig ol biddy
02:24 PM gregcnc: i think there are just many more people building
02:24 PM gloops: whats that going on CaptHindsight ?
02:24 PM gregcnc: ten years ago industrial surplus cost what the chinese stuff does now
02:24 PM CaptHindsight: it just sits in the corner
02:24 PM laminae_: Do you think there would be more people building without the 3d printer "maker" movement?
02:25 PM gregcnc: maker, yes, printer, dunno maybe it's an entry point
02:25 PM CaptHindsight: it's like getting more people to speak English, but broken English
02:25 PM laminae_: Pops up in the reprap irc a lot
02:26 PM gregcnc: exactly
02:26 PM CaptHindsight: how mnay will go on to build things that actually work?
02:26 PM gloops: well its taken off now, facebook groups etc, most people skipping the printer stage and building full sheet machines in the spare room
02:26 PM laminae_: People that got into 3d printing and suppenly they want a full on mill
02:26 PM CaptHindsight: or does this crap just make them complacent?
02:27 PM laminae_: Usually the first build is not a success but a lot of them push through and the second one is better
02:27 PM CaptHindsight: thinking that machines are just crap the same way M$ got many people to think that software is always broken
02:27 PM gloops: people who have built superb routers or converted industrial mills - yet know nothing about woodwork or engineering
02:27 PM gregcnc: i think it's driven up demand of "real" used machines basic lathes <12" have probably doubled in the last few years
02:27 PM laminae_: I was one of those people that waffled on my first router build and bought a openbuilds kit and realized i was trying to use a toy to a machines job
02:27 PM gloops: yes
02:28 PM gloops: you cant buy a used benchtop mill cheap now, they were junk a few years ago
02:28 PM laminae_: And ended up tearing it all apart and rebuilding with parker stages
02:28 PM gregcnc: everyone is buying a tormach for the garage
02:29 PM laminae_: Haas is always calling my name...
02:29 PM gregcnc: Try buying a Haas minimill used.
02:29 PM gregcnc: but the economy drives that more than makers
02:30 PM laminae_: But i also think a lot of the people are like me, they found a weird niche that is making money right now but economy could shift and they will need to adapt to it
02:30 PM CaptHindsight: cheap is what sells
02:30 PM CaptHindsight: to makers
02:30 PM laminae_: That's true
02:30 PM CaptHindsight: Hass is for pros
02:30 PM gloops: https://www.ebay.co.uk/itm/Linley-Milling-Machine-Single-Phase/392220417627?
02:31 PM CaptHindsight: that crappy router co is hiring a Director of Engineering
02:31 PM CaptHindsight: they are selling and getting investors
02:31 PM CaptHindsight: I'll get tyhe link
02:31 PM laminae_: I think the average maker is probably living at or below median wage
02:32 PM laminae_: But on the same token i've been shocked at how successful small scale business has been with cheap mahcines. I was at a weekend market near my house and this dude had a shapoko in his back truck, and he zipped out unfinished signs on the spot for fifty bucks
02:33 PM laminae_: All simple vbit stuff from blanks
02:33 PM laminae_: He had more customers than he could help too
02:33 PM CaptHindsight: sign blanks? or?
02:33 PM laminae_: i imagine he ripped the blanks from hardwood boards to save time
02:34 PM gloops: thats what its all about - right product, marketing etc
02:34 PM gloops: right place right time
02:34 PM gregcnc: this is what gloops wants to do
02:34 PM gloops: nah i dont want to see customers
02:34 PM laminae_: Exactly, so i try to be less disparaging of toy cncs like shapeokos, they can be a real backbone in the right circumstance
02:35 PM gloops: i saw an aold bloke making money with a pedal scroll saw in the street lol
02:35 PM gloops: maybe £200 an hour
02:35 PM laminae_: I also look at guys like Winston Moy and i am impressed with some of the products he spits out on those things
02:36 PM gloops: 'pedalling pete' in York, £1 a letter for names out of 2mm ply, £5 minimum
02:36 PM laminae_: Good name
02:37 PM gregcnc: but not everyone wants to do that, so you have to find something you want to do
02:37 PM CaptHindsight: how about make $ with open source..... kidding
02:37 PM gloops: i wished id got a vid, he was very good with the saw - cut names out free hand, never traced them or anything just a couple of pencil marks a few minutes done
02:38 PM laminae_: I am just a hobby business so i will probably never have the time to get to the scale i would like, i'm pretty much already at capacity with what i can do in my free time
02:38 PM CaptHindsight: what is a good design for a paste spreader? <100um layers over a an area 1m x 1m?
02:39 PM gloops: spray?
02:39 PM CaptHindsight: too thick to spray
02:39 PM gloops: roller
02:41 PM CaptHindsight: http://shawbrothers.com/wp-content/uploads/2015/09/Roller.jpg
02:43 PM CaptHindsight: the roller has to spin the opposite direction it travels to keep the paste from sticking to the roller
02:44 PM gloops: https://www.youtube.com/watch?v=_0KpW9mkPW8
02:45 PM gloops: that ones better https://www.youtube.com/watch?v=pCHFEbkLDdQ
02:45 PM gloops: how come all these are in india?
02:46 PM CaptHindsight: oh the layers are applied on top of each other
02:46 PM CaptHindsight: not onto other media
02:46 PM CaptHindsight: paste bed vs powder bed
02:47 PM CaptHindsight: paste onto media is easy
02:50 PM CaptHindsight: https://www.inventables.com/technologies/x-carve they are hiring
02:51 PM CaptHindsight: skate bearing carriage on t-slot, they are looking for a director of engineering
02:52 PM CaptHindsight: not sure who they had running things till now
02:55 PM CaptHindsight: https://www.zenbotcnc.com/
02:55 PM CaptHindsight: mach3 and they don't post a street address ^^
02:55 PM gloops: $1400 for a car roof rack and a palm router
02:56 PM CaptHindsight: roof rack might be more rigid
02:56 PM laminae_: Alright i got it modeled and the misumi option looks like a winner
02:56 PM gloops: true, i wouldnt like to put a set of ladders on that router
02:56 PM laminae_: 523 bucks
02:57 PM laminae_: driven nut
02:57 PM CaptHindsight: laminae_: http://www.automation-overstock.com/index.asp
02:57 PM gloops: does that include the nut?
02:58 PM CaptHindsight: overstock Hiwin and others^^
02:58 PM laminae_: that's just all the peices for the nut, not including the actual screw
02:58 PM CaptHindsight: mucho bettero than Misumi stuff
02:58 PM gloops: 500 dollar for a nut!
02:59 PM laminae_: I guess minus 50 for the pulley
02:59 PM laminae_: but yeah, not cheap
02:59 PM CaptHindsight: I'll make you a nut for $10K
02:59 PM gregcnc: laminae_ link?
02:59 PM laminae_: Hmm, can i share a misumi cart by link?
03:00 PM gloops: seems excessive to me for a 4 foot span, but not my cash
03:00 PM gregcnc: oh a stack of parts?
03:00 PM CaptHindsight: I'll even embed your portrait into it
03:00 PM laminae_: Yeah
03:00 PM laminae_: Wellif i don't do this i need to pay for another motor and driver
03:00 PM laminae_: And i have to machine mounts for all of them
03:01 PM laminae_: And then i need bearing blocks for each
03:01 PM laminae_: So by the end the price is pretty similar
03:01 PM laminae_: And this greatly simplifies my electrical
03:01 PM gloops: 2 scews isnt to avoid whip though, its to hold the gantry square
03:01 PM CaptHindsight: http://www.automation-overstock.com/products.asp?cat=193
03:02 PM CaptHindsight: just look at the low low prices for rolled ball screws
03:02 PM gloops: but not rotating nut drive
03:02 PM gregcnc: he wants to do a driven nut to avoid screw whipping at a classified rapid speed
03:02 PM laminae_: And also so i can hard mount to my frame
03:03 PM CaptHindsight: what type of fixity for the screw/
03:03 PM laminae_: And if i want to swap beds when i get a bigger shop i just swap y rails and screw
03:03 PM gloops: gregcnc i understand that, however, i dont know the target speed, 1200mm is not considered too great a span for a rorating screw normally though
03:03 PM CaptHindsight: an unfixed screw end will whip
03:04 PM gloops: with 1 screw under a 3 foot gantry, i suspect there be racking issues, even without cutting forces there will be momentum to contain
03:04 PM gregcnc: it's all part of machine design
03:04 PM CaptHindsight: nah
03:04 PM CaptHindsight: you jest
03:05 PM gloops: my gantry is welded steel and it racks easily
03:05 PM CaptHindsight: $119.85 16mm Ø x 5mm lead x 1150mm length rolled ball screw assembly
03:05 PM gloops: (when not attached to screws)
03:05 PM CaptHindsight: wow, get a load of the low low prices
03:06 PM gregcnc: Isel screws are not much more I think
03:06 PM gloops: Ichs used pcf blocks for rotating nuts - i was cynical but bought one to look at
03:07 PM gregcnc: pcf block?
03:07 PM gloops: unfortunately they are in the order of agricultural accuracy
03:07 PM gloops: pillow block bearing
03:07 PM CaptHindsight: we need more acronmys WNMA
03:07 PM gregcnc: well
03:07 PM gloops: there was 1 mm slack in it i swear
03:08 PM laminae_: I don't want to dismiss your concerns but i just havent had that as an issue on machines on a similar machine this is what i use frequently: https://kernlasers.com/products/co2-laser-systems/hse/
03:08 PM gloops: you could swap the bearing for a thrust bearing though
03:08 PM laminae_: One central screw, you can see the hard mount block at the front
03:08 PM laminae_: at 52" by 100"!
03:09 PM laminae_: the 100" being the y axis that has the driven screw
03:10 PM laminae_: I've done some work on it and it was a hiwin rail on the bottom left and right running the length of the cutting area
03:10 PM gloops: well i hope youre right laminae_
03:11 PM laminae_: I actually had to tear about the whole screw assembly because on early models there wasn't a grub screw on the lock ring and it would event walk off the carriage
03:11 PM laminae_: And i had to machine one in
03:12 PM gloops: dont buy these for cnc https://www.ebay.co.uk/itm/UCF-METRIC-SELF-LUBE-SQUARE-FLANGE-PILLOW-BLOCK-BEARING-UCF201-UCF212/112473806198?
03:12 PM gloops: lol
03:19 PM gloops: although with 2 and a spring or shim between you could take up the backlash and drive the nut..still a crude approach though
03:20 PM fragalot: gloops: you should be wary of that, EU has guidelines on that "pillow" y'know.
03:21 PM gloops: well flange then
03:21 PM fragalot: :-)
03:21 PM fragalot: i'm off -- ttyl
03:27 PM gloops: anyway we wont have any trouble with the EU, May announced her plan B today, which is - do nothing
03:28 PM syyl: its at least frickn entertaining from an bystanders perspective
03:29 PM gloops: https://twitter.com/i/status/1087457308693663744
03:31 PM gloops: no win situation in parliament syyl, we should be leaving with no deal - ill believe it when it happens though
03:32 PM roycroft: in the interest of harmony on this channel i've been refraining from discussing the brexit fiasco for quite some time now
03:32 PM roycroft: but i have to say
03:32 PM roycroft: you're really screwed
03:33 PM gloops: we are?
03:33 PM CaptHindsight: Putin wins!
03:33 PM roycroft: there was exactly one person in the whole of the uk who was happy after last week's vote
03:33 PM roycroft: and that person is david cameron
03:33 PM roycroft: he's happy because he is no longer the worst pm of the century
03:33 PM gloops: IMF forecast today UK will be the fastest growing economy in the G7 post brexit, EU in recession
03:34 PM roycroft: i don't know how such a forecast can be made when nobody knows what kind of trading partners the uk will have
03:34 PM roycroft: nor what kind of deals it will have with its partners
03:34 PM gloops: 190 odd nations?
03:35 PM roycroft: you'll have to negotiate trade deals with each of them
03:35 PM roycroft: the wto have already said their rules won't apply
03:35 PM gloops: we're already in the WTO
03:35 PM roycroft: and the wto said that if there's a hard brexit the uk is too big to qualify for wto trade rules
03:35 PM roycroft: and that they would not apply
03:36 PM roycroft: so you'll basically have no trade agreements with anyone
03:36 PM roycroft: nor fallbacks with anyone
03:36 PM gloops: oh dont listen to all that - theyre just bluffing, we're fine
03:36 PM roycroft: it will all have to be negotiated from scratch
03:36 PM roycroft: yeah
03:37 PM roycroft: just like the eu will bend over to the mighty brits and let the uk dictate the brexit agreement
03:37 PM gloops: they can do what they like
03:37 PM MacGalempsy: hello
03:37 PM roycroft: i'm not discussing whether it's good or bad, this brexit thing, right now
03:37 PM roycroft: but on 30 march if there's no agreement with the eu the uk will not have a good time getting out of bed
03:38 PM gloops: lol, nobody will even notice
03:38 PM roycroft: i guess we'll find out in a couple months
03:38 PM gloops: the EU regs on diesel just wiped out 10% of german car exports
03:39 PM gloops: im sure they dont want another 10% drop because they wont deal with the UK - their biggest market
03:39 PM MacGalempsy: <3 diesel
03:40 PM * roycroft just laughs, because that's all he can do
03:40 PM MacGalempsy: got a rebuilt 79 Toyota diesel for the FJ restoration
03:41 PM gregcnc: That's neat
03:41 PM MacGalempsy: fully mechanical diesel, so it should be able to burn just about anything lol
03:42 PM roycroft: as long as the fuel viscocity is right
03:42 PM roycroft: if you want to burn waste oil you will definitely need a pre-heater
03:43 PM MacGalempsy: after this thing is done, I probably wont even want to drive it hhahaaa
03:43 PM gloops: cooking oil is good
03:44 PM gloops: my mate uses a chinese takeaway a lot, hes got them saving all the used cooking oil in cans, he filters it - van runs great on it
03:46 PM MacGalempsy: one of the guys in my study area had an old school bus outfitted with the filters. he would go to the diners and pump their traps he said he could after it and have product for under 75 cents per gallon
03:46 PM MacGalempsy: the exhaust smelled like popcorn
03:47 PM gloops: lol, it does smell of whatever is fried in it
03:48 PM SpeedEvil: https://www.aliexpress.com/item/900W-1200W-1500W-3000W-Fog-Machine-heater-smoke-machine-hazer-Hood-smoke-machine-stage-lights-Spare/2048718564.html - have on my list for a fuel heater for veg oil. Fun.
03:49 PM roycroft: i've had two vehicles that i ran on biodiesel
03:50 PM roycroft: i almost set the first one up for running vegetable oil, but then we got a filling station that sold b100
03:50 PM MacGalempsy: Mercedes 300D?
03:50 PM roycroft: and it was a lot easier to just go fill up
03:50 PM roycroft: no, it was a vw rabbit
03:50 PM roycroft: my second was a new beetle
03:50 PM MacGalempsy: I want to see a biodiesel hybrid electric
03:51 PM laminae_: If any of you guys het further interest in the driven nut parts here is a model using the misumi sourced parts and a ball screw from automation overstock: https://a360.co/2UaDBRf
03:51 PM roycroft: i see them all the time
03:51 PM roycroft: they're called "railroad locomotives" :)
03:51 PM laminae_: Only thing not modeled is the threads on that collar and the lockring
03:51 PM roycroft: i don't know why no car manufacturer has developed a diesel hybrid
03:51 PM MacGalempsy: I think F1 is there now, too.
03:51 PM roycroft: but the railroads have been it since the 1940s
03:52 PM roycroft: and most of the railroads around here use a blend that comtains some biodiesel
03:52 PM MacGalempsy: just pulled the trigger on a 3d scanner. hopefully it works out
03:54 PM SpeedEvil: MacGalempsy: $$, or $$$$$$?
03:54 PM MacGalempsy: $1425
03:54 PM MacGalempsy: it is a HP computer with integrated David scanner
03:55 PM SpeedEvil: second hand?
03:55 PM FinboySlick: MacGalempsy: For precision or just 'art'?
03:55 PM MacGalempsy: yeah. new they are like 4k
03:55 PM MacGalempsy: I want to try my luck at scanning some car parts
03:56 PM MacGalempsy: HP Sprout Pro G2. still need to get the turntable
03:56 PM FinboySlick: MacGalempsy: Might be because I'm pretty handy with cad but I always found that just re-modeling it is faster.
03:57 PM Deejay: gn8
03:58 PM gloops: youre paying a lot for that laminae_
03:58 PM MacGalempsy: well see. the old computer is about to die
03:59 PM FinboySlick: Though for curvy things like fenders and what not, it's probably a good idea.
03:59 PM MacGalempsy: I am hoping to be able to scan some interior parts then print copies
04:00 PM laminae_: Yeah, it isn't perfect
04:00 PM SpeedEvil: Just pot it in wax, and then use a surface grinder and camera to generate slices.
04:00 PM laminae_: If i find a better option before i fly back home i'll go with that but at the moment it is the best contender
04:02 PM FinboySlick: MacGalempsy: What are you printing with?
04:03 PM MacGalempsy: atm a FDM mendelmax 1.5, but I am thinking about trying a SparkMaker SLA
04:05 PM MacGalempsy: that new Peopoly Moai looks pretty sweet, but its 5x more than the sparkmaker
04:22 PM gloops: wow thats a lot of iron for that money https://www.ebay.co.uk/itm/milling-machine-Lathe-And-Cnc-Milling-Machine-Need-Gone-ASAP/123602252313?
04:22 PM gloops: lathe, mill, + cnc mill
05:26 PM MacGalempsy: always nice to get heavy stuff for cheap
05:35 PM jdh: machinery or girlfriends?
05:48 PM MacGalempsy: both, just dont let your friends catch you
07:14 PM MacGalempsy: hello
07:15 PM MacGalempsy: hello
11:12 PM Net|: have you ever been punched in the fax machine ? "took a cdrom to the drive once"
11:17 PM ktchk2: nativecam debian embadded ok ubuntu not working any suggestion??