#robotics Logs

May 16 2014

00:16 rue_more its done, its done, the picnic table is done
00:17 rue_more oh, the trucks rear end is 3:1
00:18 rue_more I have to re-find the transmission ratios
00:56 rue_more so, this should be the summer of the mecha control cage
01:20 MrCurious GargantuaSauce: you there?
01:20 GargantuaSauce depends on where "here" is
01:21 MrCurious no matter where you go.... there you are
01:21 MrCurious HAPPY BIRTHDAY!!!!!
01:21 GargantuaSauce :)
01:21 rue_more HAPPY BIRTHDAY!!!!!
01:21 MrCurious google+ outed you
01:22 MrCurious whats the birthday plan?
01:22 GargantuaSauce well it's over now actually
01:23 MrCurious well then what DID you do
01:23 GargantuaSauce absolutely nothing!
01:23 MrCurious awesome!
01:23 rue_more LifeRemainingInYears--;
01:23 GargantuaSauce i wrote some obnoxious graphics code and slept for 12 hours
01:24 rue_more coool
01:24 rue_more what kinda graphics?
01:24 MrCurious probably animated boobs that grow and jiggle
01:25 rue_more do they shrink again or are you propetually falling into them
01:27 rue_more too much playing, I'm falling asleep
01:27 rue_more I have these IRF4905's infront of me, but there is no way I can put togethor a smps now
01:27 rue_more :(
01:28 rue_more have to use P channel, cause its a bench supply and with no load the base drive of an N channel pulls up the output
01:35 MrCurious u using home made transistors?
07:37 Tom_itx http://www.electronicproducts.com/Sensors_and_Transducers/Sensors/Watch_this_super-fast_bionic_arm_catch_objects_on_the_fly.aspx
07:40 SlaveToTheSauce awesome
07:40 SlaveToTheSauce the compliant manual posing seems very very smooth too
07:40 SlaveToTheSauce must have really minimal torque conversion
08:06 GuShH SlaveToTheSauce: The active tracking makes it less impressive.
08:06 GuShH By having the IR markers they simplify detection.
08:06 SlaveToTheSauce oh yeah i am just talking about motion control
08:06 GuShH that simplifies trajectory and every other tracking aspect.
08:06 GuShH no actual details given
08:07 GuShH so, these are write ups for the average joe?
08:07 SlaveToTheSauce tech news is invariably garbage
08:07 GuShH closed source, will-never-see-the-light-of-day type of project
08:08 Tom_itx MIT had one several years back
08:08 GuShH they're talking about future applications but unless you work on real detection, that's just smoke in the air.
08:09 Tom_itx where there is smoke, there is fire
08:12 GuShH that is a lie.
08:17 GuShH SlaveToTheSauce: I wasn't aware motion was an issue... It's always the interface with the real world that poses problems. They probably start with motion telling themselves it's the hardest part of the project, when in reality it isn't.
08:17 GuShH if the arm base is fairly static, an accumulation buffer can be used with subtraction of the motion frame to remove the static background and later on generate the motion vectors, but you still have to identify the faces of the object to predict the catch motion...
08:18 GuShH plus reaction speed is only relevant when your detection relies on such empirical process, if the camera is self calibrating it could work on most environments, if your detection is smart enough fluid motion is pretty much irrelevant as long as the target pose is achieved. Thus far it relies on unrealistic noiseless hard-known markers.
08:18 GuShH just another high dollar grant bullshit project.
08:19 GuShH I'm sure the prediction code is nice and cozy, it's just one piece of the puzzle.
08:19 GuShH generating those markers / interest points out of visual data is the high complexity task.
08:19 GuShH it's non trivial!
08:20 GuShH <reverts-to-self> and why are journalists allowed to write tech news anyway.
08:20 GuShH I just got another phishing attempt, cute.
08:20 Tom_itx who should cover stories like that?
08:21 ShH sits Tom_itx on a
08:21 GuShH YOU
08:21 GuShH email came from rollingthundersoftware.com ... either compromised server or someone with dull lights.
08:22 GuShH If you are going to pose as a domain registrar at least get the name right.
08:22 GuShH I might be an asshole most of the time, but it's sad that someone would take the time to target me, directly or indirectly.
08:23 Tom_itx you're grouchy today
08:23 GuShH Specially when my PayPal account balance is $0.02
08:23 Tom_itx keep your $.02 worth
08:23 GuShH No that's my two cents bro.
08:24 GuShH How am I going to give advise without them?
08:26 GuShH https://www.youtube.com/watch?v=lHpxzh423_E << interesting how those connectors failed, but not all that surprised seeing they use rolled pins
08:26 GuShH the process he came up with for the domes is pretty neat, of course it involves a cnc router, a lathe and a lot of manual work, but still they look great.
08:30 SlaveToTheSauce i wasn't saying it was an issue, i was saying it's a nice implementation
08:31 SlaveToTheSauce if you view that thing as an arm and ignore the catching stuff it's a pretty cool thing
08:32 SlaveToTheSauce and it doesnt look like they're trying to push the motion tracking as a product, but rather using it as a quick demonstration of the speed and precision capabilities
08:32 GuShH weeeeell
08:32 GuShH you can always default to that.
08:33 GuShH But unless they specifically talk about what makes that arm special and stand out... I don't see the point of the video.
08:33 GuShH And as far as catching goes, it's non reactive.
08:33 GuShH SlaveToTheSauce: grouchy is the word
08:34 SlaveToTheSauce i do agree that the actual vision algorithms are the novel part of the 'thing that catches stuff' application
08:34 SlaveToTheSauce and their implementation there is a cop-out
08:35 GuShH I seek no agreements, beep bop.
08:36 SlaveToTheSauce well an agreement you will get!
08:36 GuShH Cannot compute.
08:36 SlaveToTheSauce there are two dead pixels on my oculus rift >:|
08:40 GuShH RIP
08:59 GuShH holy crap a 210HP VFD
08:59 GuShH 12k usd
08:59 GuShH now that's some serious power.
08:59 SlaveToTheSauce isnt that like .15MW
08:59 ShH goes back to staring at the 1-2HP r
09:00 SlaveToTheSauce wonder what kind of fets it uses
09:00 GuShH SlaveToTheSauce: yes .156
09:00 GuShH bank of fets
09:00 GuShH possibly modular banks
09:00 SlaveToTheSauce well of course it'd be a bunch in parallel
09:00 SlaveToTheSauce maybe igbts actually
09:00 GuShH >_<
09:01 SlaveToTheSauce the gate drivers alone must be capable of something like a kilowatt
09:01 SlaveToTheSauce hurts my brain to think about
09:02 GuShH I can't find a picture of the actual unit
09:02 GuShH they show the smaller ones only
09:02 GuShH made by SEW, EURODRIVE
09:02 GuShH But it's got to be cabinet sized big
09:02 GuShH And highly modular
09:03 SlaveToTheSauce maybe watercooled
09:05 GuShH they use igbts and I think they can go up to 2415HP some units, so the 210HP is baby sized by comparison.
09:05 GuShH applications: agitators, centrifuge, rayon spinning...
09:07 GuShH pipeline transportation pump, coal mill, kiln draft fan, kiln drive...
09:07 GuShH heh
09:08 GuShH these go to 2075HP http://www.amtechdrives.com/Downloads/Catalogs/Axpert-Eazy.pdf
09:08 GuShH But no looksies inside
09:24 rue_more prolly just 1200V IGBT
09:25 rue_more the one at the local ice rink went down, turns out it ran on 3 SCR modules, changed all 3. 100HP compressor motors
09:26 rue_more digikey saved the day
09:26 rue_more them and their 2 day shipping
09:27 SlaveToTheSauce i find the notion of SCRs for motor control to be strange
09:28 SlaveToTheSauce do you crowbar them off or something?
09:29 rue_more just modules
09:29 rue_more each module had 2 scrs
09:30 SlaveToTheSauce oh i guess if you're just switching AC at < mains frequency you just wait for the voltage to hit zero
09:32 rue_more sorry, I think it was more of a soft start and not an outright vfd
09:33 SlaveToTheSauce yeah ok
09:36 rue_more really strange dream last night, dont know if I got any sleep
09:37 rue_more http://www.gizmology.net/molds.htm
09:37 rue_more I'm guessing that mold is 4" maybe?
09:37 rue_more I could read it I guess
09:38 SlaveToTheSauce looks a bit bigger, look at the hammer
09:38 SlaveToTheSauce i definitely want to try casting aluminium sometime
09:39 rue_more I'v made up my greensand, want to try it out
09:46 SlaveToTheSauce what are you going to cast
10:14 GuShH rue_more: oil based?
10:15 GuShH that looks like 6 inches or so
10:15 GuShH heh that's a tiny setup
10:16 GuShH the pour was cold
10:16 GuShH you can also see a sinkhole right in the middle of the cast, that's because he doesn't risers
10:17 GuShH doesn't use / have
10:26 GuShH brazil + world cup = bad idea
10:29 GuShH haha that's almost as funny as my selfie http://www.gizmology.net/index.htm
10:30 GuShH http://gushh.net/tmp/aliens.wmv I died.
11:12 GuShH lol http://www.gizmology.net/surface.htm
12:17 GuShH rue_more: ugh the dp table is also bulged, corners are higher than the center portion, don't know how the chinese manage to machine a surface and get that kind of result, other than perhaps the machine had a bearing issue and when it became unloaded on each corner it somehow raised a few thous? time to lap...
12:22 GuShH http://www.cnccookbook.com/CCMillEpoxyFill.htm
12:22 GuShH darn that's a nice disc sander
12:27 GuShH hockey puck feet... ok.. mr. canadian.
12:55 SlaveToTheSauce http://i.imgur.com/VdIqCkQ.png
12:57 GuShH lawl
19:43 GuShH rue_more: the table on the DP is soooooo badly warped I lapped it with 80 grit for half an hour and it still shows a bulge in the center portion...
19:44 GuShH it's a tapered surface so it's not easy to indicate as to tell how deep the bulge is, but enough to rock the vise or anything you put on the table about 1mm or so initially
19:44 GuShH the machining marks are gone on all four corners, but the center is still untouched.
19:45 GuShH this is a problem as you don't want parts to wobble on the table...
19:52 rue_more huh
19:52 rue_more mine is a cheap press and its fine
20:07 rue_more I need to think of soemthing that the robot arm can do
20:07 rue_more and I need to cut up the old picnic table
20:26 robotustra_ you can scratch your balls with this robot arm
20:30 Hyratel GuShH, with it that far out of true, it might be better to just hit it with the toolhead
20:32 Hyratel also that's some pretty bad chinesium
20:48 Tom_itx rue_more, did you see the arm?
20:50 GuShH I'm sick of chinesium...
20:50 GuShH rue_more: define "fine"
20:51 GuShH place a parallel with some back light and see how much of said light gets through, it might shock you, or it might not... since these things are not consistently made...
21:50 robotustra_ GuShH: are you rasist?
21:51 robotustra_ that is how 3D printer should be https://www.kickstarter.com/projects/breytblat/3dmonstr-large-industrial-grade-quad-extruder-3d-p?ref=discovery
21:57 Hyratel robotustra_, that looks yummy
22:03 GuShH robotustra_: I don't know what "rasist" is
22:07 Hyratel i think he meant 'racist'
22:08 Hyratel however, robotustra_ , it is hard to deny that 'made in china' is a very damning curse for a product
22:08 robotustra_ <GuShH> I'm sick of chinesium...
22:08 robotustra_ so you assert that you are racist
22:09 GuShH Against an imaginary alloy?
22:09 GuShH You need help.
22:09 robotustra_ if you buy cheap chinese products - you will compline all of your life
22:09 Hyratel Chinesium: the material that bottom dollar facotries use instead of decent supplies
22:09 GuShH Just about everything is made in china.
22:09 Hyratel or the tooling is chinesium
22:09 GuShH And even stuff with "ok" QC has issues.
22:10 robotustra_ I buy not very cheap chaneese products and they are QUITE GOOD
22:10 GuShH robotustra_: your milage may vary
22:10 GuShH no consistency on these products.
22:10 GuShH One is ok, the other is crap, so on so forth.
22:10 Hyratel robotustra_, you're denying that crappy bulk Made In China products exist?
22:10 robotustra_ and what of it?
22:10 GuShH I swapped it once at the store already, the previous one was in worse shape.
22:10 Hyratel robotustra_, you said "very not cheap"
22:10 GuShH robotustra_: when there's no alternative product to choose from
22:10 GuShH how is it my fault that I have to end up buying this kind of stuff?
22:10 GuShH it isn't.
22:10 Hyratel ie, your case is not comparable
22:11 GuShH it's what the market has to offer
22:11 GuShH and we pay twice as much as you do
22:11 robotustra_ there are 3 words: CHEAP, GOOD and FAST
22:11 Hyratel robotustra_, cheap is non negotiable
22:11 ShH eyerolls and sips some more sc
22:12 Hyratel fast is non factor for a boxed product
22:12 Hyratel which Made In China products are
22:12 Hyratel so you can have Cheap or Not Cheap
22:12 Hyratel and if someone can't afford the Not Cheap, what are they left with?
22:12 Hyratel you shutting your ass mouth and getting off GuShH 's case
22:12 robotustra_ http://eicolab.com.au/wp-content/uploads/2012/04/Fas-Cheap-Good-Art-Design.jpg
22:13 GuShH robotustra_: my complaint in this case is mostly at the quality of sandpaper. it used to last a lot longer, even if I get 3M stuff it doesn't last as long as it used to, everything is shit now adays. consume, consume, consume
22:13 Hyratel GuShH, red garnet paper seems to be where the durability is these days
22:13 robotustra_ I know what you mean
22:13 GuShH Cheap is irrelevant..
22:13 robotustra_ chinese guys are cheaters
22:13 GuShH the ZX45 mill costs twice or three times as much here, it's not cheap in price, it's still cheap in quality.
22:13 Hyratel robotustra_, oh way to hypocrite
22:14 robotustra_ and the quality control is poor
22:14 robotustra_ and no standartization
22:14 GuShH I have said so, QC is non existent in most of these things.
22:14 Hyratel getting mad at us for a comment about quality of cheapbulk items from somewhere, and then saying the same thing yourself
22:14 GuShH But it's a problem with whoever buys it as well, ie the suppliers... they also don't have QC or don't care.
22:15 GuShH The second drillpress had the motor fan guard bashed in, the motor wouldn't turn, I'm OK with sheet metal so I fixed it to avoid having to run another trip to the store, just to risk getting another unit with yet another fault.
22:15 robotustra_ Hyratel: who are you?
22:15 robotustra_ do I know you?
22:15 Hyratel I'm just some guy on the internet
22:15 GuShH (no you can't just remove the cover, as it channels the airflow)
22:16 robotustra_ Hyratel: keep silence, you'll look like clever
22:16 Hyratel GuShH, maybe I should pay you to fix up a two-axis drill press vise I got at Harbor Freight
22:16 GuShH anyone is entitled to their own opinion, robotustra_... this is not russia.
22:16 GuShH Hyratel: no thanks!
22:16 Hyratel there's about a quarter inch of slop in the screws
22:16 Hyratel I haven't gone over it with a fine tooth yet
22:16 GuShH yeah most likely because there's just a grub / set screw shoved in there
22:17 Hyratel 'grub'?
22:17 GuShH head-less, sits flush
22:17 Hyratel are E-clips and ripple washers the best way to go?
22:17 GuShH I've seen one converted with thrust bearings
22:17 Hyratel hmm
22:18 Hyratel I need to see how much play there is in the axes slides.
22:18 GuShH some people do spend quite some time on these cheap things
22:18 Hyratel I dont' think it's dovetailed
22:18 Hyratel easier than getting a raw casting
22:18 GuShH the ones I know are dovetailed and have gibs
22:18 Hyratel and you're not out much in materials if it goes *pluh*
22:18 GuShH so you can take the slop out, but it's horribly gritty, so you have to lap the surfaces
22:19 Hyratel in time? out quite a bit
22:19 Hyratel but you'd be out more time if you fucked up a bought-raw casting
22:19 GuShH as for the backlash... take it all apart just to notice the nuts are sloppier than britney's baby maker.
22:19 ShH co
22:19 Hyratel ...ew. I did not need that mental image
22:19 GuShH Hahaha
22:20 Hyratel excuse me a minute while I floss my brain
22:20 GuShH something like this ? http://www.harborfreight.com/5-rugged-cast-iron-drill-press-milling-vise-69159.html
22:20 GuShH there's a 4" one and some other models
22:20 Hyratel yes! the 4" one i think
22:20 GuShH they're made in the same factory my crappy vise was made.
22:21 Hyratel you can tell?
22:21 GuShH there are surprisingly very few companies in china doing this kind of stuff
22:21 Hyratel mmmmm
22:21 Hyratel how would I go about lapping the slide faces?
22:22 GuShH kerosene and grit (coarser to finer)
22:22 Hyratel kerosene? as way oil?
22:22 GuShH as a solvent and medium for the grit to become suspended in
22:23 GuShH so you wet the surfaces, sprinkle the grit and begin to rock the slide back and forth a number of strokes for each grit
22:23 Hyratel oh, loose grit
22:23 GuShH right
22:23 Hyratel slide?
22:23 Hyratel oh, do it assembled?
22:23 GuShH you wash in between with more kerosene, so no stray grit from the previous step remains
22:23 GuShH yeah but with the gib loosened
22:23 Hyratel brb, going to check what it is
22:24 Hyratel the gib - the "keeper"?
22:24 Hyratel the bit that hooks underneath?
22:24 GuShH the metal strip that's held in between the dovetails
22:24 Hyratel oh ok
22:24 GuShH there are 3 screws on the side pushing against it
22:24 Hyratel what if it's not DT and just has a T
22:24 GuShH one is used to lock the slide
22:24 GuShH DT?
22:24 Hyratel dovetail
22:24 GuShH oh, similar story
22:24 Hyratel noted
22:25 GuShH the top portion won't be dovetailed (the vise)
22:25 Hyratel if the dimensional accuracy is bad, how would I shim it? I don't have a torch?
22:25 GuShH the gibs are like adjustable shims
22:25 Hyratel hmm brb
22:26 GuShH the T block on the vise however if it's got slop you can machine it down and add a gib to the side... it's just a lot of work for what it is... I added a 0.15mm brass shim on mine, couldn't be bothered.
22:27 Hyratel i have the 6 inch
22:28 Hyratel http://www.harborfreight.com/6-inch-cross-slide-vise-32997.html
22:28 GuShH I almost bought one of those, to locate holes on the drill press...
22:28 Hyratel the vise jaw screw has a lot of slop in its threaded block
22:29 GuShH yeah same on that vise I took apart
22:29 GuShH it's terrible.
22:29 Hyratel anything that can be done about it or just 'live with it'
22:29 GuShH the ACME screw is quite good but the female thread is not.
22:29 Hyratel and the vise screw just has a grub screw
22:29 Hyratel grub setscrew
22:30 GuShH I thought about drilling and tapping a setscrew so it interfaces right in the "ridge" of the ACME thread, to take the slop out... I don't know if it would work, or if it's worth the hassle.
22:30 GuShH if you had enough material you would just bore out the old thread and replace it with a brass bushing, tapped to the right thread size / pitch
22:30 Hyratel probably not worth the hassle
22:30 GuShH the only alternative is to mill out the whole nut portion and machine a new part...
22:31 GuShH again, that's a lot of work for what it is
22:31 GuShH something about polishing a turd...
22:31 GuShH it's still going to be a turd by the end of the day
22:31 Hyratel GuShH, well, consider it this way
22:31 GuShH I don't think I've seen an XY "vise" or table for that kind of money, but without some work it's not usable IMO
22:31 Hyratel would you rather buy a raw casting set and turn it into a vise on your own time?
22:32 GuShH haha
22:33 Hyratel I wonder if you can actually do that
22:33 GuShH I would rather machine everything from steel stock, if I had the option.
22:33 GuShH just buy the equivalent cost in raw stock.
22:33 GuShH you could probably make two vises.
22:33 Hyratel if a cmpany were selling raw iron castings as "kits" would you buy one?
22:33 GuShH in a weekend or two.
22:33 GuShH they do that, for model engines
22:34 Hyratel yeah but for a vise, would you?
22:34 GuShH doubtful
22:34 GuShH specially in places where you can get a used KURT vise for not much
22:34 Hyratel how did you find the high points on yours?
22:34 GuShH layout dye (prussian blue) -- flat surface, emery cloth.
22:35 Hyratel unfortunately, i don't have any Flat Surfaces
22:35 GuShH you can also rub the two moving parts together (one with layout dye) to see the contact points
22:35 GuShH glass will do, granite or marble is ideal
22:35 Hyratel even the poured concrete floor of my shop isn't True
22:36 GuShH this is non precision work... you don't need an old surface plate for this.
22:36 Hyratel hmmmm
22:36 Hyratel both of the axes use bolted-n acme female blocks
22:36 GuShH 8-10mm glass is flat enough, assuming it's about the size of a sheet of sandpaper and sits on a relatively flat surface (glass flexes)
22:36 Hyratel bolted-on
22:37 GuShH I would just take it all apart down to the last bolt/nut
22:37 Hyratel I have some ~5mm glass windowpane sections
22:37 Hyratel and?
22:37 GuShH and start working on it :)
22:37 Hyratel ah
22:37 GuShH I bet the jaws are not flat to begin with
22:38 GuShH what good is a vise with non flat jaws...
22:38 Hyratel ew ew
22:38 Hyratel how would I fix that
22:38 Hyratel sheet metal shims?
22:38 GuShH try to lap it...
22:38 GuShH or replace them
22:38 Hyratel I don't have Grit
22:38 Hyratel or kerosene
22:38 GuShH grit is needed for mating surfaces, but separate parts you can use emery cloth
22:39 Hyratel my shop is my basement and I don't even have a drillpress
22:39 GuShH and water / soap
22:39 GuShH so why did you get one of those cross slide vises?
22:39 Hyratel for the high school robotics shop
22:39 Hyratel FRC 1793 Alumn and Mentor
22:40 GuShH what you are attempting to do is called fitting
22:40 Hyratel what should I do about the grub screws
22:40 GuShH it is one of the lowest life forms in the machinist community.
22:40 GuShH to be called a "fitter" is considered an insult by most.
22:40 Hyratel bleh
22:41 GuShH heh
22:41 GuShH take it all apart... start by lapping and polishing the gib strips
22:42 GuShH everything has to be as smooth and parallel as possible.
22:42 GuShH but without the grit, you can't really work on the mating surfaces
22:42 GuShH that's one major difference between these toys and actual vises... the real deal has precision ground ways, which are often hardened as well.
22:42 GuShH a toy vise has rough machined surfaces, that's it.
22:44 GuShH other differences include the way the moving jaw locks against the work, some impart the force from the upper portion of the jaw downard, to avoid the jaw being lifted up
22:44 GuShH castings are solid instead of hollow
22:44 GuShH usually just the base is cast, the rest is solid steel.
22:44 Hyratel only enough open spaces in the castings for the motion and screws?
22:44 GuShH yeah and the screws are often covered.
22:44 GuShH to prevent swarf from getting in
22:46 GuShH then the way the vise is locked differs based on the quality and type, some are cam lock, others have combination screw / camlock, etc.
22:46 GuShH I think camlocks are mostly used for production (repetitive tasks)
22:46 GuShH so the same force and the same gap is always present
22:47 GuShH what you have is mostly for placing "relatively accurate spaced" holes
22:47 GuShH for anything else an XY table would be required, but on a drillpress you can't actually mill anything, so... you'd be limited.
22:49 Hyratel so this ... thing... would be suited to making a line of holes, but not much more sophisticated than that?
22:49 GuShH correct
22:50 GuShH if you had a drawbar on the drillpress and a collet, also assuming it has tapered bearings (unless you don't mind destroying the deep groove it most likely already has in it) then you can try doing some light milling, assuming the quill is rigid enough and never attempt to climb mill.
22:50 GuShH but for those conditions to be met, it would not be a drillpress... it would be a milling machine, heh
22:51 GuShH a) jacobs type chucks are not meant to take side loads
22:51 GuShH b) tapers come loose with side loads
22:51 GuShH c) drillpresses are non precision machines meant to drill, not mill
22:51 Hyratel I was familiar with all of these points
22:51 GuShH (there are precision ones, but typically they are not precise)
22:52 Hyratel and conseider also this has been used in a high school shop for 9 years
22:52 Hyratel the drill press
22:52 GuShH that said, I've milled flats on shafts using a drillpress on a pinch, but only on aluminum
22:52 Hyratel what about repeat plunge milling
22:52 GuShH if it's been used for 9 years and it still works, that drillpress is worth keeping
22:52 Hyratel hah
22:52 Hyratel well it's only used for ~4 months out of the year and then not for large batch jobs
22:53 Hyratel mostly it's used for poking Aluminum or Acrylic
22:53 GuShH plunge milling produces both radial and axial/thrust loads
22:54 Hyratel yeah but the axial loads are reduced, compared to milling conventionally
22:54 GuShH you are free to try it out :)
22:54 Hyratel i meant like plunge, lift, move, plunge (etc)
22:54 GuShH yeah
22:54 Hyratel oh, yeah I see now
22:54 Hyratel peanut holes such
22:54 Hyratel suck
22:55 GuShH mhh peanuts
22:55 Hyratel you too huh
22:56 GuShH I'm quite sure that cross slide vise would be useful after a lot of work.
22:56 GuShH I bet as it is the thing moves with resistance and feels gritty
22:57 GuShH if I got one it would be just to see how well they can be after SEVERAL HOURS of work...
22:57 Hyratel I wouldn't even start using it as is - i'd wash out the grease it came with and put some marine axle grease
22:58 Hyratel rust-inhibiting because shit rusts here
22:58 GuShH man you must eat a lot of nails
22:58 Hyratel no shit
22:58 GuShH yes shit, rusty shit.
22:59 Hyratel interestingly, the slides have a high pressure grease nipple
22:59 GuShH they do?
23:00 GuShH one thing I haven't dared to try is to actually hand scrape something like this
23:00 Hyratel hand scrape?
23:00 GuShH it's a difficult technique
23:00 GuShH you use layout dye to figure out the high and low spots, you then scrape the highs off
23:00 Hyratel oh
23:00 Hyratel eeek
23:00 GuShH apply more dye, mate the surfaces again, repeat.
23:00 Hyratel that's what I'd probably have to do
23:00 GuShH it takes ages and you only remove a tiny bit at a time
23:01 Hyratel I can only imagine
23:01 Hyratel I don't even have layout dye
23:01 GuShH sharpie
23:01 GuShH will do.
23:01 Hyratel how used?
23:01 GuShH although it's not the same
23:02 GuShH just paint the surfaces, rub them, you'll see where the sharpie has weared out that's a high spot.
23:02 Hyratel aha makes sense
23:02 GuShH scraping is old school
23:03 GuShH the goal is to have even surfaces and as much surface area in contact as possible
23:03 Hyratel at all times
23:03 GuShH usually one surface is first ground flat, or lapped flat.
23:03 GuShH and that is taken as a reference, for scraping the other part/s
23:04 Hyratel mmmh
23:05 GuShH Hyratel: some more on that https://www.youtube.com/watch?v=esAqz6bCVyQ
23:06 GuShH just found that, but it shows a bit of the process
23:06 Hyratel would I use like... 220 paper for shaving the high points?
23:07 GuShH he's using a power scraper... posh.
23:08 Hyratel is the scraper a reciprocating plane/chisel blade?
23:09 GuShH similar, it has a round edge so only a small area makes contact
23:10 Hyratel that's a different kind of "truth table"
23:10 GuShH I think he has the right ideas, but not the right tools.
23:10 GuShH at least that's not a surface plate he used to check if the part was parallel..
23:12 GuShH (plus nobody on their right mind would apply layout dye on a surface plate like that)
23:14 GuShH https://www.youtube.com/watch?v=Y8NqeD73ZZ4
23:14 GuShH Hahahaha
23:18 ratel d
23:30 rue_shop2 hehe power wink
23:34 rue_shop2 how many rue does it take to change a lightbulb?
23:34 rue_shop2 a: we dunno, can only find leds
23:37 rue_shop2 "dont know where I parked my ship" "what does it look like?" "dunno" "you dont know what your ship looks like?" "its a shape shifting ship, no idea what it looks like right now" "how do you find it?" "its great, smooth ride, lots of power" "no, I mean how do you FIND your ship?" "oh, luck" "LUCK?" "are we still being chased?" "yes" "lets hide under this cart" "ok" "gee, its pretty big under here..." "oh, its my ship!" "......"
23:50 rue_shop2 2sj598
23:52 rue_shop2 P channel, huh
23:52 rue_shop2 ikghkgh, 130mR