#linuxcnc Logs
Jul 21 2020
#linuxcnc Calendar
12:25 AM pink_vampire: hi
12:51 AM veegee: pink_vampire hello there young lady
12:51 AM veegee: Loetmichel ok so unfortunately the problem wasn't as simple as a lock pin
12:51 AM veegee: I got the forks to widen but it's almost certainly a fundamental problem with the hydraulics
12:51 AM pink_vampire: hi veegee
12:52 AM veegee: I had to manually use my strength to wiggle the fork back and forth in the direction of the ram and actuating the lever very slightly got one fork to open
12:52 AM pink_vampire: what problem?
12:53 AM veegee: A problem that Loetmichel has been helping me diagnose with my very old Allis Chalmers forklift that I'm restoring. Everything on it works except the fork widening mechanism
12:53 AM veegee: I mean it works but randomly failed and we've been trying to figure out what the problem is for the last two days
12:54 AM veegee: So now the fork widening mechanism is very janky and gets "stuck" at random positions. Wiggling the lever back and forth randomly seems to free it
12:54 AM pink_vampire: maybe a defective valve?
12:54 AM veegee: It seems to seize up in a way that sounds like the pump is working hard to get the ram to move but it's stuck
12:55 AM veegee: Also, if I open the throttle and give the pump more power, that causes the mechanism to "seize up" again
12:55 AM pink_vampire: or maybe some high spots on the cylinder
12:55 AM veegee: It only seems to want to work when engine is idling and the lever is very slightly actuated. Any more power than that and it gets stuck
12:55 AM veegee: And it gets stuck at completely random positions now
12:56 AM veegee: I'm also leaning towards faulty valve of some kind as Loetmichel initially guessed
12:56 AM pink_vampire: can you connect it to other valve for testing?
12:56 AM veegee: What do you mean by that?
12:56 AM veegee: The hoses seem to have some weird connection that looks like the sleeve of a pneumatic quick disconnect
12:57 AM pink_vampire: do you have several valves that control other stuff, just cross it with something else and see how it work
12:58 AM pink_vampire: make sure no air is in the system
12:58 AM veegee: Yeah, mast raise/lower, tilt forward/back, rotate forks, widen forks
12:58 AM veegee: So I guess I can swap the rotating head hoses with the fork widening hoses
12:58 AM pink_vampire: yeah
12:59 AM pink_vampire: this will show you very clear if you have a faulty valve.
12:59 AM veegee: Loetmichel did share a very gruesome story about him seeing first hand his coworker getting sliced in half by a fan of high pressure hydraulic fluid when a pipe bursted
01:00 AM veegee: so now I have to read up on all the safety aspects of it and making sure nothing is under pressure
01:00 AM veegee: if anything, the faulty valve is on the ram end
01:00 AM veegee: I can clearly see the hoses near the ram jerk when I actuate the lever
01:01 AM pink_vampire: and very important you must take the extra step to make sure there is no air in the system.
01:01 AM veegee: All other mechanisms work flawlessly
01:01 AM veegee: so I guess there's no air right?
01:02 AM veegee: mast raise/lower, tilt, rotate all work perfectly without a hiccup
01:03 AM veegee: And the oil definitely needs to be changed but this thing is so old, I have no idea what oil to use. It has a briggs and stratton engine but the model information is covered in grease.
01:03 AM pink_vampire: oxygen in oil under pressure can explode
01:04 AM veegee: If the hydraulic loop is common to the whole system, can I assume that there's no air in the lines if the rest of the rams work perfectly?
01:04 AM pink_vampire: and don't do this kind of stuff https://www.youtube.com/watch?v=4GqR27WKPfI
01:05 AM veegee: LOL yeah I'm very cautious. I do more looking and examining than actual hitting things with a hammer
01:06 AM veegee: And that title is gold "SO DANGER!! Don't be play with Hydraulic Cylinder"
01:10 AM veegee: Really it takes a special level of IQ to hit things under pressure with sledgehammers
01:11 AM pink_vampire: "special level of IQ" LOL
01:12 AM veegee: da engrish not so gud wun u kno
01:14 AM veegee: Some of the hoses are worn a bit in some areas to where I can see the steel braid. Not sure if that's considered an immediate danger
01:14 AM veegee: I would guess not since the outer layer is just rubber
01:16 AM pink_vampire: don't cut corners with hydraulics, it might kill you.
01:17 AM pink_vampire: there is NO reason to left a defective hose, it is the cheapest part in the system
01:17 AM veegee: Yeah that's true, replacing that is part of the restoration process
01:18 AM veegee: I have another forklift that I use regularly for doing actual work with. I'm just restoring this one because I got it for next to nothing along with a pallet with 1,000kg of spare parts for it
01:20 AM pink_vampire: nice!
01:21 AM pink_vampire: what is the best drill for cast iron?
01:22 AM veegee: I was literally drilling the mounting holes on my vise a bit larger today
01:22 AM veegee: I would say cobalt tipped bits
01:22 AM veegee: But I didn't have a 1/2" size so I used titanium coated bits and they worked just fine
01:23 AM veegee: I should mention that this vise is actually austempered ductile iron, not your regular cast iron which I'm assuming is a bit harder.
01:24 AM veegee: Either one should be no problem for HSS. I was squirting it with WD40 to keep the temperature low. Worked just fine and no wear to the drill bit that I can see
01:25 AM veegee: Of course tungsten carbide is better than everything, but I was using a hand drill so I didn't want to use a brittle drill bit
01:25 AM pink_vampire: normal hss don't do much to this iron
01:25 AM veegee: Then yeah, cobalt is what you need
01:26 AM veegee: It'll cut through cast iron no problem
01:26 AM veegee: Or just tungsten carbide and high speed if you have a vertical mill or at least drill press
01:27 AM pink_vampire: I have only 9/64" cobalt drill
01:27 AM pink_vampire: I need to use cordless drill
01:28 AM veegee: I have this for that exact purpose: https://www.amazon.ca/Irwin-Tools-3018002-29-Piece-Cobalt/dp/B000EB891W
01:28 AM veegee: works very well, never had an issue drilling into cast iron
01:29 AM pink_vampire: I will give it a try
01:30 AM pink_vampire: what rpm are you using?
01:31 AM * roycroft finds cast iron one of the easiest metals to machine
01:31 AM pink_vampire: also me
01:31 AM roycroft: not so easy to weld
01:31 AM pink_vampire: very easy to machine
01:31 AM veegee: I tend to use high speed and low pressure just because I don't want the bit to slip in the chuck
01:31 AM roycroft: but very easy to machine
01:31 AM pink_vampire: but not to drill
01:31 AM roycroft: drilling is a machining process
01:32 AM roycroft: and i include that in "easy"
01:32 AM roycroft: in my experience
01:32 AM veegee: Yeah just spin the bit as fast as it can go
01:32 AM roycroft: or at the proper speed
01:32 AM veegee: if you want to get it started, make a little hole with a carbide burr
01:33 AM roycroft: i almost always start drilled holes with a center drill
01:33 AM veegee: oil will help keep temperatures down
01:33 AM pink_vampire: ok, I finish my lucky charms, and it is time to drill it with cobalt.
01:34 AM veegee: It's 2:30 am here
01:34 AM veegee: Where do you live?
01:34 AM roycroft: i don't use lubricant for drilling cast iron - it does not need it
01:34 AM veegee: I'm just waiting for my 3 different sleep meds to kick in
01:34 AM pink_vampire: I got my anchorlube , so I give it a dry on that also
01:34 AM pink_vampire: I'm in NY
01:34 AM veegee: not for the cast iron, just so I don't mess with the temper on the drill bit
01:34 AM pink_vampire: it is 2:24AM here
01:34 AM veegee: So it's also 2:30 am
01:34 AM Loetmichel: pink_vampire: just use a normal HSS drill bit for steel. Get one TIN coated if possible though, the excess carbon in cast iron makes it abrasive.
01:35 AM veegee: Cobalt will be better than TiN coated
01:35 AM roycroft: if you need coolant you're cutting too fast
01:35 AM roycroft: slow down your machine
01:35 AM roycroft: cast iron often has a tough "skin"
01:35 AM Loetmichel: veegee: you can have both. There are TiN coated HSS-CO bits ;)
01:36 AM veegee: oh, didn't know that
01:36 AM roycroft: but the center drill cuts through that, and then a standard drill does a brilliant job
01:36 AM pink_vampire: roycroft: it is a drill
01:36 AM pink_vampire: cordless (usb)
01:36 AM Loetmichel: yeah, the cast skin of cast iron can be pretty hard
01:37 AM veegee: yeah maybe hit with an angle grinder first to get past the skin
01:37 AM roycroft: or use a center drill
01:37 AM roycroft: which is the correct way to accurately drill a hole
01:37 AM Loetmichel: point was that even a normal HSS bit without -E or -CO will do, but cause of the abrasive qualitys of cast iron it will dull pretty fast
01:37 AM roycroft: a "spot" drill, actually
01:38 AM Loetmichel: compared to forged steel
01:38 AM roycroft: a center drill is for the lathe
01:38 AM roycroft: but machinists generically call the ones for drilling machines center drills
01:38 AM Loetmichel: roycroft: If i understood correctly she(?) wants to "ream out" the mounting holes of her Vice
01:39 AM Loetmichel: so no center drill needed
01:39 AM roycroft: probably because many actually use a lathe center drill, which has the wrong geometry for starting a hole made by a twist drill
01:39 AM veegee: I just use a center punch. If I'm drilling by hand, I don't need precision
01:39 AM pink_vampire: the cobalt dose work much better on it - no lube
01:39 AM pink_vampire: I did center punch it
01:39 AM pink_vampire: I need to drill like 50 holes
01:39 AM veegee: Loetmichel the vise thing was me. Not sure what her task is
01:39 AM roycroft: a center punch gets you in the general vicinity
01:39 AM Loetmichel: ah, sorry
01:39 AM pink_vampire: I need to cut a section
01:39 AM roycroft: which may be good enough
01:40 AM roycroft: but it won't guide a drill straight like a starter hole with a center drill will
01:40 AM Loetmichel: roycroft: i would be careful with using a center punch on cast iron though
01:40 AM roycroft: yes
01:41 AM roycroft: but again, a center drill is fine :)
01:41 AM Loetmichel: i HAVE seen it break because of a center punch
01:41 AM veegee: Yeah don't center punch cast iron
01:41 AM veegee: You'll crack it
01:41 AM pink_vampire: and the drill is gone
01:41 AM roycroft: i wasn't suggesting center punching cast iron
01:41 AM roycroft: i was responding to a statement that center punching is often good enough
01:42 AM veegee: But for anything like what pink_vampire is doing, that's 100% a milling operation
01:42 AM veegee: With carbide bits
01:42 AM Loetmichel: btw: be aware that cast iron "swarf" (aka. dust) is pretty abrasive, too, dont let it get on your lathe ways
01:42 AM roycroft: i only use a center punch to locate non-precision holes for the center drill
01:42 AM roycroft: yes, cover your lathe ways when turning cast iron
01:42 AM roycroft: and wear a dust mask
01:43 AM roycroft: which we're all wearing these days anyway
01:43 AM roycroft: so pretend you're at the supermarket when you're machining cast iron :)
01:44 AM pink_vampire: I can't mill the mill without one more mill
01:50 AM pink_vampire: it is almost fill like I'm trying to drill 123 block
02:42 AM Loetmichel: https://www.elecrow.com/crowpi2.html <- *WANT!*
04:33 AM XXCoder: veegee: sounds like derbis inside mechism? one that shifts around
04:33 AM pink_vampire: Loetmichel: NICE! now I want one as well!
04:34 AM pink_vampire: https://i.imgur.com/mWTlrkc.png
04:34 AM pink_vampire: 2 drill broke
04:35 AM pink_vampire: one I was able to take out, the other one was drilled with carbide endmill
04:35 AM pink_vampire: and I re sharpened those drill and finish the job
04:36 AM pink_vampire: now I need to drill the bottom line, but I'm not sure what will be the best way to cut it
04:36 AM pink_vampire: XXCoder: Loetmichel veegee roycroft ^
04:37 AM XXCoder: can some jigsaw for hard metal do it?
04:39 AM pink_vampire: I don't have any
04:44 AM XXCoder: oh well
04:45 AM pink_vampire: I need EDM tap remover
04:52 AM norias: pink_vampire: don't we all
04:53 AM Loetmichel: pink_vampire: its cheap. comperatively at least
04:54 AM Loetmichel: i now backed it for $300, including all of the sensors. a powerbank, an raspi4 and an 128gb sdcard.
04:54 AM Loetmichel: thought it to be more like $1000
04:55 AM * Loetmichel just drills out broken HSS taps with a carbide mill bit on the CNC mill
04:55 AM pink_vampire: I did it by hand!
04:55 AM XXCoder: you cut it off by hand?
04:55 AM XXCoder: ;)
04:57 AM norias: you cut off your hand?!
04:58 AM pink_vampire: i don't have any nail polish right now
04:58 AM Loetmichel: pink_vampire: i tend to have that problem of broken taps in alu often
04:58 AM Loetmichel: freehand with a carbide bit the chances are high that your bit wanders off and drills the alu instead of the tap
04:58 AM pink_vampire: what aluminum grade?
04:58 AM Loetmichel: thats why i use the CNC for that
04:58 AM Loetmichel: usually AlMg3
05:00 AM pink_vampire: it is gummy?
05:00 AM Loetmichel: a bit
05:00 AM pink_vampire: get 2XXX alloy
05:00 AM Loetmichel: less so than al99, more so than 7075
05:00 AM pink_vampire: very hard and nice to work with
05:02 AM Loetmichel: problem isnt that it happens often. on the contrary. but WHEN i break a tap its usually in a blind hole in weak alu, which will not guide the carbide bit from slipping of the hardened tap at all
05:02 AM pink_vampire: are you using forming taps? or cutting taps?
05:03 AM pink_vampire: I need to get 12X1 nuts for the ballscrew
05:04 AM pink_vampire: but I have no idea what tool to use to snug them
05:05 AM Loetmichel: cutting taps
05:05 AM Loetmichel: but as i said: it doesent happen often at all but when it happens it happens in alu
05:05 AM Loetmichel: not in something more resilient
05:07 AM JT-Cave: morning
05:07 AM pink_vampire: https://www.ebay.com/itm/293006727719
05:07 AM pink_vampire: what tool close this thing?
05:07 AM JT-Cave: hook spanner
05:08 AM pink_vampire: but I need 2 nuts
05:08 AM Loetmichel: indeed
05:08 AM JT-Cave: https://www.mcmaster.com/hook-spanner-wrenches
05:08 AM pink_vampire: and I have only small slot in the holder
05:09 AM Loetmichel: i meant jt-cave
05:10 AM pink_vampire: https://i.imgur.com/5wVHxED.png
05:11 AM pink_vampire: with hex nut I can use socket from the outside
05:12 AM pink_vampire: but I can't find a socket for those ones
05:12 AM pink_vampire: is there any advantage to the hook spanner VS hex?
05:17 AM JT-Cave: https://www.mcmaster.com/nuts/bearing-retaining-nuts/
05:17 AM JT-Cave: they are usually used to retain bearings
05:19 AM XXCoder: I did wonder about hex vs those hook spanner type nuts
05:20 AM XXCoder: but then isnt latter pretty much round with just holes so its quite balanced for spinning?
05:26 AM JT-Cave: spanner nuts are designed to retain something on a shaft and hex nuts are designed to fasten something and are generally a lower quality
05:27 AM XXCoder: I guess I was overthinking this. thanks
06:00 AM Tom_L: morning
06:00 AM XXCoder: yo
06:00 AM XXCoder: today wasnt too bad
06:00 AM XXCoder: 80f 50% humidity
06:01 AM XXCoder: I look "forward" to worse in august'
06:02 AM Tom_L: 72 / 88 rain
06:02 AM XXCoder: in shop 50% feel like im walking in sauna
06:03 AM XXCoder: 80% makes i feel like in walking in hot spa
06:03 AM XXCoder: thankfully it almost never goes that high
06:05 AM JT-Cave: low 70's to low 90's the rest of the week with high humidity in the morning
06:05 AM JT-Cave: tobacco hornworms 0 ... JT 14
06:06 AM XXCoder: beating them with your special flashl;ight eh heh
06:26 AM pink_vampire: I want to get proper ballscrew support
06:27 AM pink_vampire: like the BK12
06:27 AM pink_vampire: but I'm not sure how the motor is connected to it?
06:35 AM Loetmichel: XXCoder: evern been to the maroccan desert?
06:35 AM XXCoder: no?
06:36 AM Loetmichel: 50°C++... but dry as fu**... with the right clothing: not only bearable but bordering on "ok"
06:36 AM XXCoder: yeah as long as you keep drinking water
06:36 AM Loetmichel: indeed
06:36 AM XXCoder: closest thing I got was death valley
06:37 AM XXCoder: it broke record while we was passing it lol
06:37 AM XXCoder: and we had to roll windows up due to sand torodos
06:37 AM XXCoder: no AC of course lol
06:38 AM XXCoder: we used rags constantly out of melted ice box
06:38 AM Loetmichel: worst thing we had was when we drove thru the Atlas mountains... coming down from snowclad mountains into a 50°C desert we stopped where a mountain creek disappeared into the sand...
06:38 AM Loetmichel: Took a shovel and made a bathtub.
06:38 AM Loetmichel: THAT was a feeling to jump into 10°C water when the air is 50°C
06:38 AM XXCoder: niiice
06:38 AM Loetmichel: nothing for people with a weak heart ;)
06:39 AM Loetmichel: <- had a BAD headace from the cold shock when i dove to wash my hair ;)
06:40 AM Loetmichel: dove in
06:40 AM XXCoder: external ice cream headache lol
06:40 AM Loetmichel: yes
06:40 AM Loetmichel: "brain freeze" :-)
07:11 AM JT-Cave: https://www.nxtbook.com/nxtbooks/ruralmissouri/202007/index.php#/p/48
07:55 AM Loetmichel: *yaaaaawwwwwww* just dozed off (Head->desk) while CADing on my workplace... I think i shouldnt go to bed past 0400 anymore when i have to get up at 0700 for work... "juuust that one reddit post"... I am not 20yo any more! ;)
08:01 AM JavaBean: yeah, there is a redditor called "Ralts_bloodthorne" that makes that even harder, loet
08:04 AM Lcvette: morning
08:08 AM JavaBean: daystar has indeed risen again
08:21 AM Loetmichel: JavaBean: i (re)discovered https://www.reddit.com/r/HFY/ yesterday evening. NOT good for the sleep cycle ;)
08:23 AM JavaBean: and ralts's series is a damn good contributer to that subreddit... dude was a fsck'n machine, in the last 6 months.... which is odd, because its a lot of posts and a long series already
08:33 AM robotustra: where linux cnc is used more? in Europe or in America?
08:54 AM JT-Cave: no way to know where it's being used
09:00 AM robotustra: what about contriution into it?
09:01 AM JT-Cave: both Europe and America
10:08 AM pcw_home: 58F degrees and drizzle, SFBA summer...
10:10 AM roycroft: it's sunny and warm here in oregon
10:10 AM roycroft: it's going to get up to the mid 30s again today
10:11 AM pcw_home: are you inland?
10:20 AM robotustra: hm, CNC converstion kit for g0704 propose ballscrew with 0.0015" backlash which is about 0.04 mm but the original screws has backlash of about 0.1mm and it could be adjusted to smaller
10:20 AM robotustra: is there a reason to pay 700$ for such ballscrews?
10:23 AM roycroft: yes, i'm about an hour inland, in the willamette valley
10:23 AM roycroft: in between the coast range and the cascades
10:24 AM roycroft: robotustra: you can get double nut ball screws that can be adjusted to zero backlash
10:24 AM roycroft: ball screws should have very little backlash to begin with
10:36 AM robotustra: the question is do I have to do it if I can just make split nut, loaded with spring and get the same result.
10:37 AM robotustra: I see that the precision of the mill itself is about 0.02-0.04 mm
10:38 AM robotustra: it mean that I can't get more precision on the mill even if I put ballscrews on it :)
10:39 AM robotustra: I'll try just to remove existing backlashes on a current screw-nut
10:41 AM robotustra: the only thing is bother me the friction in the screw
10:41 AM robotustra: and it may wear faster
10:47 AM pink_vampire: what lead screw is better for a DIY vise, 304 stainless OR Carbon Steel Grade 12.9 Black Oxide?
10:53 AM Rab: pink_vampire, using a standard trapezoidal thread screw as a lead screw? Both of those are pretty terrible. I would lean toward the black oxide, keeping it lubricated, and viewing the nut as a wear item.
10:54 AM Rab: So like, a bronze nut that screws onto the vise rather than a threaded hole in the body.
10:54 AM Rab: No acme stock available?
10:56 AM roycroft: the thread profile is more important than the material
10:56 AM roycroft: a unified thread profile is not going to be very strong
10:56 AM robotustra: who build custom vise in the 21st century?
10:56 AM roycroft: makers
10:56 AM roycroft: you know the saying
10:56 AM roycroft: makers gonna make
10:57 AM robotustra: it looks like that makers gonna live like 1000 years?
10:57 AM pink_vampire: some stuff you can't buy
10:58 AM pink_vampire: what is the smallest "standard trapezoidal thread"
10:58 AM pink_vampire: ?
10:58 AM pink_vampire: Rab: ^
10:58 AM robotustra: ACME thread
10:59 AM pink_vampire: but what is the smallest?
10:59 AM pink_vampire: 1/4?
10:59 AM robotustra: I have 1/2-10
11:00 AM Rab: pink_vampire, there is small acme thread, for sure.
11:00 AM robotustra: but I think there is smaller one for 3d-printers
11:00 AM roycroft: 1/4" is the smallest acme threaded rod that mcmaster carry
11:01 AM roycroft: i take that back
11:01 AM robotustra: ah, it will be tiny little vise?
11:01 AM roycroft: they have 1/8" acme threaded rod in ultra precision
11:01 AM pink_vampire: price?
11:01 AM roycroft: 1/8"-20.8 or 1/8"-41.7
11:01 AM roycroft: 6" of 1/8"-20.8 is US$18.91
11:02 AM roycroft: https://www.mcmaster.com/Acme-Threaded-Rods/ultra-precision-lead-screws-and-nuts/
11:02 AM pink_vampire: plastic nut
11:03 AM pink_vampire: can you find a tap for that?
11:03 AM roycroft: yes, and with an acetal plastic nut you can get a slight friction fit
11:04 AM Rab: pink_vampire, you can find acme taps, but I made my own from a 1/2" remnant: http://reboots.g-cipher.net/rabbot/image/acmetap4_finished.jpg
11:05 AM Rab: It wasn't a great tap, but it worked.
11:05 AM pink_vampire: I need to tap steel
11:06 AM roycroft: i would not use rab's tap for that :)
11:06 AM Rab: Yeah, you probably want a real tap. But I would invest that money in a replaceable nut instead.
11:06 AM roycroft: acme taps are pricey
11:06 AM roycroft: so yeah
11:07 AM roycroft: a flange nut that you can replace would probably be cheaper and more maintainable
11:07 AM roycroft: if that works in your application
11:08 AM robotustra: is this threaded rod for a tiny vise?
11:09 AM roycroft: the common acme taps also cannot be reversed, so you have to use them in a through hole where there is clearance to run the tap all the way through the part
11:10 AM roycroft: and they are pretty long
11:15 AM Rab: roycroft, I had no idea, duly noted.
11:28 AM roycroft: rab: there are some that can be reversed, but most acme taps have multiple thread forms on them to cut the different parts of the thread, and if you reverse you can damage parts that you've cut already
11:37 AM andypugh: I made an Acme tap.
11:38 AM andypugh: A made a video about making an Acme tap, in fact. https://youtu.be/fo7SwanH50I
11:39 AM andypugh: And then one about single-pointing an acme nut, instead: https://youtu.be/FJyby8HsAhU
11:57 AM jymmmm: andypugh: I like your "belt start" =)
11:57 AM andypugh: I have since fitted a single phase motor.
12:01 PM pink_vampire: andypugh: nice collet!
12:02 PM andypugh: The Burnerd Multisize?
12:02 PM jymmmm: andypugh: I still like it, but no clue why =)
12:02 PM pink_vampire: the 3d printed
12:04 PM andypugh: Ah, yes. That’s possibly the most interesting idea in the video.
12:05 PM jymmmm: Hmmmm, that' doesn't look like lcnc on your screen
12:05 PM pink_vampire: did you say the 3d printed dial indicator?
12:05 PM andypugh: jymmmm: It is. Touchy + Lathemacro
12:05 PM pink_vampire: https://www.thingiverse.com/thing:4524389
12:06 PM andypugh: pink_vampire: I did. It is actually similar to the vevery first inidicators.
12:07 PM pink_vampire: it is pink
12:07 PM jymmmm: andypugh: With that preview? https://i.imgur.com/oGa6nkI.png
12:08 PM andypugh: That’s not a preview, it’s the turning macro entry screen.
12:08 PM jymmmm: andypugh: Oh, sweet =)
12:08 PM jymmmm: andypugh: very cool
12:09 PM andypugh: have a look at sim/gmoccapy/lathemacro if you want to play.
12:11 PM andypugh: pink_vampire: Google Starret 564 for an example of an early all-lever test indicator.
12:15 PM pink_vampire: andypugh: nice!
12:27 PM jymmmm: andypugh: Since you play with fire, perlite is an EXCELLENT thermal insulator.... 1"/25mm thick layer of perlite.... 1400F inside, 140F outside.
12:28 PM andypugh: I have used vermiculite.
12:29 PM andypugh: Did you see my “blacksmiths forge from things you can buy on a sunday”? Perlite can be found in garden centres, so would be another option.
12:30 PM andypugh: http://bodgesoc.blogspot.com/2014/06/forge.html
12:30 PM jymmmm: andypugh: I have a 4cubic foot bag of perlite, but that's where I started palying with it, in the garden plants. Never played with vermiculite personally.
12:33 PM jymmmm: andypugh: nice =)
01:34 PM rmu: https://www.youtube.com/watch?v=S8no-4z9hbM
01:44 PM veegee: andypugh oh nice didn't know you had a channel, subscribed
01:46 PM veegee: But your profile pic D: If that's you dragging knee, you're not parallel to the bike
01:47 PM veegee: Your upper body should be a bit lower such that your spine is parallel to the bike
02:29 PM andypugh: I am not very mobile on the bike, it has to be admitted.
02:29 PM andypugh: Though that was quite a while ago, when my bike was new.
02:30 PM andypugh: (2004 R1, bought brand-new in 2004. I still like it, so haven’t changed it. 120,000 miles)
02:54 PM * JT-Shop once carried a sheet of plywood home on a motorcycle
02:55 PM andypugh: A friend once carried a motorcycle on a motorcycle. Strapped to his back. (with the wheels carried on a second journey)
03:10 PM JT-Shop: I can just see that in my head
03:10 PM JT-Shop: I pulled another motorcycle with a belt in my mouth until we were off the spillway bridge
03:10 PM JT-Shop: I won't do either of them again lol
03:11 PM XXCoder: "yo I heard you like riding on bike...."
03:12 PM JT-Shop: yea motorcycles and bicycles
03:12 PM JT-Shop: got my first motorcycle in 1967
03:14 PM andypugh: Just for info, the way to tow another bike is left footpeg to right footpeg (or the other way, depending on which side of the road you are on) and with the rope only wrapped round the footpeg. Then either rider can take the weight off their foot to release the tow.
03:15 PM andypugh: Now, should I get some of these for my proposed toolpost grinding spindle? https://www.ebay.co.uk/itm/7902-Full-Ceramic-Zirconia-Oxide-Angular-Contact-Ball-Bearing-ZrO2-15-x-28-x-7mm-/133435774251?_trksid=p2385738.m4383.l4275.c10
03:20 PM JT-Shop: yea a rope would have been handy but when your on a 2 lane bridge over a spillway that's a few miles long and cars and trucks wizzing by you just want to get off the bridge so a 24" belt was the only thing we had...
03:21 PM JT-Shop: is a Ceramic bearing higher speed?
03:21 PM andypugh: Supposedly. And a lot cooler.
03:22 PM andypugh: Otherwise no real advantage. But those are only about twice the price of normal ones.
03:22 PM andypugh: Oddly, though, I can’t find them with the eBay search.
04:16 PM Tom_L: andypugh, i got some ceramic bearings for my kids skates and they didn't last as long
04:17 PM Tom_L: they ended up with some steel swiss bearings that lasted much better
04:19 PM Tom_L: https://www.vxb.com/searchresults.asp?Search=15+x+28+x+7+ceramic&Submit=
04:32 PM veegee: I used those steel skateboard bearings to replace the one in my 20 year old vacuum cleaner
04:32 PM veegee: the bearing finally failed after 20 years of use (about 5 years ago)
04:33 PM veegee: The skateboard bearings are still working perfectly fine, and at very high speeds that a vacuum cleaner motor runs at
04:52 PM veegee: pink_vampire when you suggested it might be a faulty valve, where would such a valve be located in the cylinder? I'm going to try swapping the hoses tonight. So if I swap them and it turns out that they work, what does that indicate? And what does it indicate if swapping the hoses makes no difference? If it's a faulty valve, where would it be located in such a system?
04:53 PM veegee: I'm a total noob when it comes to hydraulic systems, I have zero experience. This is my learning time haha
06:10 PM jymmmm: andypugh: Just saw the END of your acme tap video.... Oooooops ;)
06:11 PM andypugh: Yes, pretty much destroyed my face drive.
06:11 PM jymmmm: andypugh: Ouch :(
06:13 PM jymmmm: andypugh: A few years ago I saw a diy acme tap.... Just used some acme threaded rod and a cutoff wheel in an angle grinder
06:14 PM andypugh: This one was to cut a very long nut, 2.5 inches.
06:14 PM veegee: roycroft you mentioned yesterday about some kind of drill bit for proper drilling of straight holes, what was it?
06:14 PM veegee: Not for the lathe, but for a drill press or hand drill
06:14 PM andypugh: And, also, 9/16 Acme is not a size you can just buy.
06:14 PM jymmmm: andypugh: I liked the psyhocoligcal "shield", that was funny, but so true
06:30 PM berin_ is now known as _unreal_
06:30 PM _unreal_: good lord this metal part is killing on how long its taking to mill
06:31 PM _unreal_: I have this aluminum that is hardened aluminum scraps. took like 30min to cut it on my band saw
06:33 PM skunkworks: veegee: gun drill?
06:34 PM veegee: skunkworks yes
06:41 PM SpeedEvil: Can always anneal it if you don't need it hard
07:00 PM robotustra: huh
07:00 PM robotustra: decreased lashbacks on the X and Y on the mill
07:01 PM robotustra: chineese workers didn't even try to adjust lashbacks
07:01 PM robotustra: adjusting bolts on the split nut unscrewed by fingers
07:02 PM robotustra: now I have lashbacks around 0.001"
07:03 PM jymmmm: andypugh: Why 9/16?
07:03 PM andypugh: That’s just what Holbrook used.
07:03 PM jymmmm: andypugh: ah, gotcha
07:05 PM jymmmm: Got my BMS, cells are ordered, forgot connectors lol
07:11 PM JavaBean: what were you setting up again?
07:14 PM jymmmm: Making a battery
07:19 PM JavaBean: get chance and luck
07:21 PM jymmmm: heh, thanks =)
07:21 PM _unreal_: OMG this milling is sooooooo slow
07:22 PM _unreal_: did you guys hear a lot of the florida beer bug (covid) testing sites got busted for faulse numbers??
07:23 PM robotustra: easy
07:23 PM _unreal_: http://ww11.doh.state.fl.us/comm/_partners/covid19_report_archive/ the FL gov web site with the results that MUST be published because its public record.....
07:24 PM Tom_L: hiding the truth?
07:24 PM _unreal_: faulse numbers
07:24 PM _unreal_: false
07:24 PM _unreal_: you can see the posts riht there
07:24 PM _unreal_: the DIM WITs didnt know that the info gets published
07:25 PM _unreal_: a lot of them were sending in 100% positive results on WALK in testing... every day
07:25 PM _unreal_: others days in a row were getting LOL 99 to 1
07:25 PM _unreal_: different numbers of people but 99 TO 1 EVERY DAY
07:25 PM _unreal_: and so on
07:27 PM _unreal_: the VERY telling part is that when they got CAUGHT. the reporting numbers SUDDELY started to normalize a bit LOL
07:30 PM robotustra: if you report covid - youll be get paid. othervise - no
07:35 PM roycroft: please, let's not discuss covid-19 scams here
07:36 PM roycroft: it will only devolve into politics and a lot of other bad energy
07:36 PM roycroft: thank you
07:36 PM _unreal_: if you guys have SKP viewers here is the 3d model https://drive.google.com/file/d/1unJZi6cQep_Ge87ULs1OBjAPKdhAMheC/view?usp=sharing
07:37 PM _unreal_: the parts in red ish are the one's I'm making
07:37 PM _unreal_: not DONE in google sketch up
07:37 PM _unreal_: just an easy viewer
07:41 PM roycroft: it's still hosted on a google server
07:41 PM roycroft: but i'm not dying to view it so my issues with google are of no real concern in this case
07:51 PM _unreal_: OMG...... make it go faster
07:51 PM _unreal_: hardened aluminum is a MOTHER to mill
07:52 PM _unreal_: especially on a weak cnc machine
07:53 PM robotustra: on G10 machine?
07:54 PM robotustra: I believe in Fe
07:54 PM robotustra: thanks god that you made the Earth with plenty on Fe and Ni
07:55 PM robotustra: Al is also not bad
08:11 PM skunkworks: recycling... http://electronicsam.com/images/greenmachine/IMG_20200721_194510.jpg
08:23 PM pink_vampire: veegee: do you have a scheme of the hydraulic system?
08:23 PM veegee: pink_vampire I don't, it's a standard forklift
08:26 PM pink_vampire: https://sapphirehydraulics.com/disconnect-hydraulic-hose-tractor/