#linuxcnc Logs

Jun 15 2020

01:39 AM Deejay: moin
03:17 AM pink_vampire: hi
03:17 AM XXCoder: yo
03:30 AM pink_vampire: how are you
03:30 AM XXCoder: dizzy as usual heh
03:30 AM XXCoder: you
03:33 AM XXCoder: you?
05:11 AM JT-Cave: morning
05:14 AM XXCoder: yo
05:14 AM XXCoder: soon I will go back to grindstone
05:14 AM XXCoder: hopefully I wint be too dizzy to.
06:25 AM Tom_L: morning
06:26 AM JT-Cave: yo
06:27 AM XXCoder: yo
07:31 AM transhumanist: anyone able to point me to a delta type cnc that is built toward accuracy rather than speed?
07:37 AM JT-Cave: sounds like unobtainum to me
07:38 AM transhumanist: well with the design its a trade off between speed and accuracy isn't it
07:41 AM JT-Cave: I have seen some large accurate deltas if you have a few million dollars of spare change
07:43 AM transhumanist: you wouldnt have a link would you? Just trying to judge what it takes to get the accuracy from them, thanks
07:59 AM JT-Cave: no, it was a video I saw years ago
08:00 AM * JT-Cave wanders out to clean chicken poop
08:00 AM transhumanist: thanks JT-Cave
08:36 AM Rab: transhumanist, https://www.youtube.com/watch?v=nebJ59TcYlQ
08:36 AM Rab: The test in wood doesn't prove much, I thought the same person had done a test in aluminum but I don't see it. They seem to have dropped out of sight.
08:39 AM perry_j1987: mornign
08:41 AM perry_j1987: woke up grizzly said 60% off summer sale
08:41 AM perry_j1987: sadly not on the mills haha
08:44 AM Rab: transhumanist, I believe you were asking about a 4th axis for a Taig. I haven't used a Taig, but I noticed that somebody's selling a rotary stage commonly used for Sherline mills for what seems like a bargain price: https://www.ebay.com/itm/191714031261
08:47 AM Rab: Of course you still need to mount a chuck, or other workholding method. This one is built up for that purpose: https://www.ebay.com/itm/283885066732
08:58 AM perry_j1987: when i bought my rotary i went for one of those belt driven ones with through hole chuck
08:58 AM perry_j1987: its been real nice being able to swap rod stock between lathe and mill without having to part off individual pieces first
08:59 AM perry_j1987: saves a lot of waste
08:59 AM Rab: perry_j1987, that sounds pretty cool.
09:00 AM Rab: I'd like something like that for my manual mill. Unfortunately the rotary table I have now won't mount vertically (for horizontal axis).
09:00 AM perry_j1987: https://amzn.to/2C0CY8P this is the one
09:01 AM Rab: And I expect to use it even less frequently than the rotary table, so I'm brainstorming ways to do it on the cheap. ;)
09:07 AM perry_j1987: ah you want a table?
09:07 AM Rab: JUst a 4th axis. Or an indexer, but if it's a motorized axis I could use it on the CNC too.
09:09 AM Rab: perry_j1987, primarily rod stock I suppose.
09:10 AM perry_j1987: im not one to spend copious amounts of money and this is the rotary axis solution that looked best of all worlds for me
09:10 AM perry_j1987: i looked into those worm gear things too
09:10 AM perry_j1987: but alot of work and money spent for no through hole capability
09:11 AM Rab: perry_j1987, sure. The one you posted looks pretty good. No issues with rigidity?
09:11 AM perry_j1987: havnt had any issues yet
09:12 AM perry_j1987: if you get one i can share my setup for it with you
09:12 AM perry_j1987: was a bear to figure out how to calibate when i was super new lol
09:26 AM perry_j1987: Rab the only thing i wish fusion 360 did more with 4th axis cam
09:27 AM perry_j1987: it would be fun to have ability to do eccentric work with the 4th axis and such
09:28 AM transhumanist: thank you very much RAb!
09:28 AM transhumanist: err Rab
09:30 AM Rab: transhumanist, take a look at perry_j1987's link above, too.
09:34 AM perry_j1987: finally ordering some more tool holders for this qctp
09:34 AM perry_j1987: took a year but finally got tired of swapping some of the tools haha
09:38 AM transhumanist: thanks perry_j1987
09:38 AM perry_j1987: np
09:39 AM transhumanist: anyone of you guys seen the multi million dollar high accurace delta , I am very curios what they did to make it so accurate
09:39 AM transhumanist: I cant seem to find the video
09:39 AM transhumanist: delta type8
09:40 AM transhumanist: delta type*
09:40 AM gregcnc: metrom?
09:40 AM transhumanist: is that what its called? I dont know will look though
09:41 AM perry_j1987: hmm whats this tool holder used for SWGCR
09:42 AM gregcnc: trigon inserts
09:44 AM perry_j1987: left face is 90 degree to the shank
09:44 AM perry_j1987: front face is 5 to 7 degree it appears
09:46 AM gregcnc: the G in the callout
09:59 AM Rab: transhumanist, certainly some of that money must have gone into the tool platform bearings, since any play will be magnified by the delta geometry.
10:17 AM transhumanist: Ya, I am just hoping to find a good video of it
10:54 AM gregcnc: commercial machine?
11:25 AM jymmmm: These hilink ac/dc module are pretty good, especially for those that need 5V without needing a USB port... $3 https://www.youtube.com/watch?v=-JD3E7e0RAE
11:25 AM transhumanist: ]
11:42 AM Rab: andypugh, not sure if you're around, but I updated my system to use current 4.14.174-rtai packages from http://www.linuxcnc.org/temp/. The module load/unload test still hangs my system: 5 runs hung at passes 777, 49, 917, 2375, and 813, which seems similar to the spread of the last test.
11:44 AM Rab: I want to emphasize that I'm not having any problem in normal operation, and that this is not a request for any type of support, just an effort to provide some field data.
11:46 AM Rab: But in related news: since I updated the packages, my Intel onboard video is correctly identified and my display comes up at the correct 1920x1200. So I couldn't be more pleased. ;)
12:19 PM norias: howdy
12:19 PM Thorhian: Its been a while norias, how's it going?
12:19 PM norias: good, you?
12:20 PM norias: I just discovered the Haas CL-1 ... man is that giving me ideas
12:21 PM Thorhian: Pretty good, are you familiar with steel alloys? I'm trying to choose/find steel for the structure of my mill.
12:21 PM norias: hmmm
12:21 PM Thorhian: I'm trying to pick between A36 (cheap and easy to find in various shapes and sizes) and 1018.
12:21 PM norias: steel just seems like a bad idea
12:21 PM norias: a36 and 1018 are pretty much the same thing
12:22 PM norias: look at the chemical composition
12:22 PM norias: the ranges overlap
12:22 PM norias: a36 is the structural variety, and 1018 is more what's sold to machine shops
12:22 PM Thorhian: It's better than aluminum norias, and I'm also using epoxy granite to fill the Z axis column (a rectangular tube).
12:23 PM norias: well, ok, now that's fair
12:23 PM Thorhian: I can't cast a whole bunch of iron and then machine it into shape lol. I don't have that kind of equipment/skill lol
12:24 PM norias: yeah
12:24 PM norias: dude
12:24 PM norias: i should make a little hobby swiss lathe
12:24 PM norias: haha
12:24 PM norias: slay the dragon
12:24 PM Thorhian: Lol
12:25 PM norias: i'm "consulting" for this startup
12:25 PM Thorhian: Whats the difference between a normal "metal" lathe and a swiss lathe?
12:25 PM norias: uh, generally ... roughly ...
12:25 PM norias: the way the material is held
12:25 PM norias: and the tooling
12:25 PM norias: basically the headstock moves
12:26 PM norias: and some of the tools only move in the X axis
12:26 PM norias: so, this startup
12:26 PM Thorhian: Oh wait, they can move the stock that's being worked on right?
12:26 PM norias: yeah
12:27 PM norias: they are only ever bar fed
12:27 PM norias: and usually high production, precision stuff
12:27 PM Thorhian: Yeah, I've seen a big one on grimsmo's youtube channel.
12:27 PM norias: because you can have >1 tool in contact with the part at once
12:28 PM norias: automating milling is this big thing
12:28 PM norias: trying to get good automation for 1 part (i.e. prototyping)
12:28 PM norias: but i kinda want to go go at turning
12:28 PM norias: since i feel like no one is looking at it
12:28 PM norias: and from a certain perspective, it's an easier problem
12:30 PM norias: i kinda wonder if inverting 100% of the thinking makes sense
12:30 PM norias: do prototyping on a cnc swiss
12:31 PM Thorhian: You would need one first lol
12:31 PM Thorhian: Also, this is the Tornos Machine that I have seen on youtube https://youtu.be/YvY_yPrY2Rg
12:33 PM norias: yep, looks right to me
12:33 PM norias: i'm saying...
12:33 PM norias: why not make one?
12:35 PM Thorhian: I don't know, I think that is up to you, and your wallet lol
12:35 PM norias: could be <= cost of a mill
12:35 PM norias: all the parts are small
12:36 PM Thorhian: And how big/how good of tolerances you want.
12:36 PM norias: bar sizes don't get that big
12:36 PM norias: so, let's say you did a dedicated machine just for 6061 aluminum
12:37 PM Thorhian: I'm guessing swiss lathes don't work do larger stock sizes?
12:38 PM norias: 1-2" max
12:39 PM Thorhian: 1 to 2 inches is still pretty beefy for a system like that IMO lol
12:40 PM norias: oh, so, i have a weird question
12:40 PM norias: for you, personally
12:40 PM norias: say...
12:40 PM norias: someone had a CNC Mill with cameras all throughout it
12:40 PM norias: and some system to load stock and unload parts
12:41 PM norias: that, given standard stock sizes and tooling
12:41 PM norias: you could write your own programs for remotely
12:41 PM norias: and submit them to be run
12:41 PM norias: is that something you would pay for?
12:42 PM Thorhian: If some of measurement work required for repeatability could be automated, I would be interested (if I could actually pay for it and actually use it for a business).
12:43 PM Thorhian: I've already seen some work on using computer vision to read analog measurement tools using openCV on LinuxCNC and a Haimer probe, so I bet it would be doable.
12:44 PM Thorhian: I know pallet changers exist, but I haven't seen robots that setup pallets for the pallet changer robot before.
12:49 PM Loetmichel: Ouch... just filled the convertible up the second time after buying it... MAN now i know why it was so cheap... the 250000km (155kmiles) on the odo show: 11.5l/100km (20mpg) E10 AND half a liter oil to refill after only 485km (300mi) driven... :-( -> https://www.spritmonitor.de/en/detail/1152248.html
12:56 PM Thorhian: Oh boy
12:58 PM norias: eh. analog tools
12:59 PM norias: i feel like the feature set on turned parts is less
12:59 PM norias: i think it would make measurement simpler
01:01 PM norias: my intuition is that there's something interesting to be done with air gaging and machine learning
01:24 PM veegee: Our transformer is a 600V - 208Y120. If I want to power several 240V single phase machines, how important is it to balance the phases on industrial utility power?
01:25 PM veegee: Like if I have only two machines and using only two legs, do I have to worry about having that third leg not being used?
01:25 PM Loetmichel: no
01:25 PM Loetmichel: but if you have three dont put 2 on the same phase
01:25 PM Loetmichel: that could overload the neutral
01:26 PM veegee: Well yeah, the goal is to balanace as much as possible
01:26 PM veegee: 208V is good enough for 240V machines right?
01:26 PM veegee: I know, stupid question, depends on the machine
01:26 PM Loetmichel: rule of thumb: if the current on neutral is smaller than the current on any single Phase you are good (usually
01:26 PM Loetmichel: )
01:27 PM Loetmichel: for some yes, for some no
01:27 PM veegee: I also have a 600V - 240V three phase transformer sitting unused. I guess I should hook that one up instead
01:27 PM veegee: for the 240V stuff anyway
01:28 PM veegee: I'm rewiring the entire unit. Getting rid of the ridiculous 14 AWG wire and replacing with at least 10 AWG for 30A everywhere
01:29 PM veegee: 120V/15A is so ridiculously stupid in any workshop setting
01:30 PM veegee: Any tips on muffling the sound of the air blast from my compressor air tank auto drain?
01:30 PM veegee: I set it to 1 second burst every 10 minutes and it startles me every time
01:33 PM SpeedEvil: veegee: put a hose on it.
01:34 PM Loetmichel: i would make a small box filled with stainless steel wool and a bottom made of chicken wire
01:34 PM Loetmichel: and feed the exhaust into the top
01:34 PM Loetmichel: of course it needs to hover above ground a bit
01:34 PM veegee: Loetmichel excellent, thanks!
01:35 PM Loetmichel: important is that the air has room to expand before it leaves the box
01:35 PM Loetmichel: so ideally its a pyramid with the air intake at the top
01:36 PM Loetmichel: (a box works just the same though)
01:36 PM SpeedEvil: If you have absolutely nothing on it, a sponge brass or whatever vent plug will make it lots quieter
01:37 PM Loetmichel: sponge brass isnt ideal if its a water drain
01:37 PM Loetmichel: it clogs to easily
01:38 PM veegee: Got it, thank you!
01:38 PM SpeedEvil: I've used 5mm aquarium tubing in the past with good results
01:39 PM veegee: I have plenty of hose
01:39 PM SpeedEvil: ID is so small that no pressure can get out at flow
01:39 PM SpeedEvil: ^high flow
01:39 PM veegee: Oh I get what you're doing
01:40 PM Tom_L: run a hose outside and you won't hear it
01:40 PM SpeedEvil: That too of course.
01:40 PM veegee: Yeah thought of that, but I don't want to run a hose along the floor
01:40 PM veegee: A muffler as Loetmichel suggested is perfect
01:40 PM Tom_L: if it's ferrous it will rust quickly
01:41 PM veegee: stainless steel
01:41 PM SpeedEvil: Stainles steel only rusts when it's most annoying
01:42 PM veegee: If it becomes a problem, I'll replace it with a non metal spongy material
01:42 PM Tom_L: mold
01:42 PM veegee: harmless to humans
01:42 PM veegee: (I studied mycology) ]
01:42 PM SpeedEvil: Also can you for example hook the drain valve and compressor to a light circuit?
02:28 PM perry_j1987: hows it going
02:30 PM CaptHindsight: 1-2mm thread forming in soft steel, whats your most successful method?
02:31 PM CaptHindsight: inside threads
02:35 PM perry_j1987: so im getting sensor tripped while homing
02:36 PM Rab: CaptHindsight, I've had good luck roll tapping 2-56 in stainless, by hand. But I haven't done a lot of it.
02:37 PM Rab: Not quite 2mm, but close.
02:38 PM CaptHindsight: these are likely M2 x 0.40, yeah close
02:42 PM CaptHindsight: https://www.youtube.com/watch?time_continue=2&v=Y0R161ybHYE&feature=emb_logo
02:44 PM Rab: I like roll tapping for metals in general, but the process isn't too forgiving at small diameters.
02:45 PM CaptHindsight: they do go down to M2
02:45 PM perry_j1987: does linuxcnc need epp or ecp mode for parallel port?
02:46 PM CaptHindsight: yes
02:46 PM Rab: If the hole is even slightly too small, the tap can break. Too large, and the thread doesn't fully form, which can result in cross-threading into that divot in the formed thread you can see in the video.
02:46 PM CaptHindsight: but you need a LPT card that is actually capable of doing so
02:47 PM CaptHindsight: Rab: the holes would be properly drilled
02:48 PM Rab: So if I'm threading a hole which will be used with a bunch of different fasteners, carelessly inserted (e.g. some kind of shop tool), I'll cut tap instead.
02:50 PM Rab: CaptHindsight, use a sharp tap and cutting oil, and find the exact hole size for a forming tap at your desired thread engagement: it's pretty far off from the cut tap chart.
02:51 PM CaptHindsight: haven't had to do a bunch of them
02:52 PM CaptHindsight: I might design to avoid it
02:52 PM Rab: For 6-32 and over, I'll often just chuck the roll tap into a power screwdriver or cordless drill and shoot it in by hand. No chips, no need to back out. Occasionally I will break taps at 6-32, so it's a bad habit at that level.
02:52 PM CaptHindsight: yeah for protos that is what I do
02:53 PM Rab: They are much stronger than cut taps, having no flutes.
02:53 PM Rab: (Sometimes coolant channels)
02:53 PM CaptHindsight: but if I have to make 1,000's of parts with 4 holes in each
02:55 PM CaptHindsight: https://images-na.ssl-images-amazon.com/images/I/61ZwrpNV6dL._AC_SL1000_.jpg 7mm rail mounted to steel
02:57 PM CaptHindsight: in aluminum is easy, the steel screws self thread
03:07 PM perry_j1987: cause im getting error when homing
03:07 PM CaptHindsight: perry_j1987: what error?
03:07 PM perry_j1987: when i home it says sensor triggered
03:08 PM perry_j1987: or if i move an axis it keeps tripping it says
03:08 PM CaptHindsight: how does homing error relate to LPT mode?
03:08 PM perry_j1987: i just swapped the computer out to a new computer
03:08 PM perry_j1987: its BOB setup so was wondering if something with the lpt port mode was different than the previous computer
03:08 PM CaptHindsight: when you home is there a change of state on the home switch?
03:09 PM jymmmm: This lil PS is actually kinda cool... https://www.aliexpress.com/item/4000373854134.html
03:09 PM dirty_d: perry_j1987, sounds like an issue I had with incorrect homing setup
03:10 PM dirty_d: I didn;t have my offsets right so at the home position the switch was right on the edge of being tripped
03:10 PM jymmmm: I found a linux software someone wrote to interface to it
03:10 PM perry_j1987: i just copied the configs over from the old computer to the new one
03:10 PM dirty_d: mine worked until it didnt too
03:11 PM dirty_d: probably a change in temperature in humidity moved something a few thou and tripped the switch at the home position
03:11 PM dirty_d: or humidity*
03:11 PM Rab: perry_j1987, I use the diagnostic utility at the bottom of this page when I want to monitor or toggle parport line status outside LinuxCNC: http://yyao.ca/projects/ParallelPortLinux/
03:12 PM Loetmichel: jymmmm: missing a transformer though
03:12 PM Loetmichel: and its an SMPS, so probably not very "clean" power
03:12 PM jymmmm: Loetmichel: use any foxed PS you want for inout
03:13 PM jymmmm: fixed*
03:13 PM Loetmichel: you mean: input?
03:13 PM Loetmichel: yeah, possible
03:13 PM Loetmichel: but i meant: its only half the thing if it has no 110V60hz/230V50Hz input
03:13 PM jymmmm: Loetmichel: Has PC SW and App to control/program it
03:14 PM Loetmichel: so sure its cheap
03:14 PM Loetmichel: point i wanted to make is that while that thing certainly has its uses its not that good as a general lab supply
03:15 PM Loetmichel: a lab supply has to be "clean" and fast regulating IMHO
03:15 PM jymmmm: Loetmichel: IT's $20
03:15 PM Loetmichel: i may have high standards though because i do many audio things on my electronics workbench
03:15 PM Loetmichel: jymmmm: i know
03:16 PM andypugh: Thorhian: Probably too late. But all steels have exactly the same stiffness, and you wont be getting anywhere near the elastic limit of even the cheapest, so go for ease of welding, if you are welding, or price, or machinability.
03:16 PM Loetmichel: still $20 to much if you expected a clean output, fast regulating and an AC input
03:16 PM Loetmichel: s/and/or
03:16 PM jymmmm: Loetmichel: But, that it's programmable, could interface with arduino/EPS, and make a custom charger =)
03:17 PM Loetmichel: no, for being a charger it has to have some measuring inputs/balancing inputs
03:17 PM Loetmichel: it can make a crude NiCd/NiMh charger maybe
03:17 PM jymmmm: Loetmichel: have you ever seen a solar control woth balancing leads?
03:18 PM jymmmm: with*
03:18 PM Loetmichel: but any CC/CV PSU can do that
03:18 PM jymmmm: Loetmichel: Not multi stage
03:18 PM jymmmm: (hands off)
03:18 PM Loetmichel: i have never seen ANY Lithium solar battery without BMS. not the point
03:19 PM Loetmichel: and you wont tell me that you want to charge your solar battery with 5A?
03:19 PM jymmmm: But BMS isn't lithium multi stage charging
03:19 PM Loetmichel: thats useless for that application
03:19 PM jymmmm: Nope, 10A =)
03:19 PM Loetmichel: still useless unless its a portable system
03:20 PM Loetmichel: and not powering a house or RC
03:20 PM Loetmichel: RV
03:20 PM jymmmm: Loetmichel: I just need to charge the battery from mains within 6 hours, bonus for car too
03:22 PM jymmmm: Loetmichel: But they don't make a buck/boost higher than 5A
03:24 PM jymmmm: Loetmichel: And I do understand what you are saying about a "proper" bench PS =)
03:39 PM jymmmm: Loetmichel: just a little something you don't care if you blow it up =)
04:00 PM Deejay: gn8
04:32 PM perry_j1987: ok in the shop now
04:32 PM perry_j1987: exact error i got probe tripped during homing motion
04:37 PM andypugh: That means that the prope input pin triggered during a homing motion.
04:38 PM andypugh: Do you have a probe? Is it wired?
04:38 PM andypugh: Did it trip during the homing motion? :-)
04:38 PM perry_j1987: the z probe? touch plate?
04:39 PM andypugh: You tell me, it’s your machine :-)
04:39 PM andypugh: Whatever is wired to motion.probe-in
04:39 PM perry_j1987: hahahahaha
04:39 PM perry_j1987: damn it fell off the cradle and was touching the bed
04:39 PM andypugh: The error means that the HAL pin motion.provbe-in changed state during the homing motion.
04:39 PM perry_j1987: ty haha
04:40 PM andypugh: The clue was in the error message, really.
04:40 PM perry_j1987: i was getting worried cause i had just swapped out computers with a new one and was thinking it was bigger issue than simple one
04:40 PM perry_j1987: i havnt used the probe in over a year so forgot i had the thing
04:48 PM perry_j1987: brb
05:27 PM perry_j1987: there we go always fun making some quick cash selling on facebook marketplace lol
06:24 PM -!- #linuxcnc mode set to +v by ChanServ
06:30 PM pink_vampire: hi
06:30 PM pink_vampire: any lathe users?
06:31 PM andypugh: Yes
06:31 PM andypugh: don’t you have one?
06:36 PM JT-Cave: lol
06:38 PM Loetmichel: yes
06:38 PM Loetmichel: who hasnt?
06:38 PM Loetmichel: in this channel i mean
06:38 PM Loetmichel: :-)
06:38 PM Loetmichel: s/not/none
06:39 PM andypugh: A lot of people start (wrongly) with a mill, thinking that willl be more useful. And missing the fact that lathes are just more fun...
06:39 PM pink_vampire: yes I have one, but I want to get some tool holders,
06:39 PM Loetmichel: andypugh: a mill IS more usefull most of the time.
06:39 PM Loetmichel: until its not.
06:39 PM andypugh: (Consider the relative popularity of wooturning v freehand routing…)
06:40 PM andypugh: Yes, but for a hobby, lathes are somehoe more pleasant to work with.
06:41 PM andypugh: pink_vampire: tool holdrs for carbide?
06:41 PM * Loetmichel has two lathes. one medium sized benchtop one ("optimum D480") and a REALLY small C0 clone ;)
06:41 PM Loetmichel: that thing is funny
06:42 PM pink_vampire: andypugh: yes, I want some nice kit
06:42 PM Loetmichel: https://www.youtube.com/watch?v=7J40p8dMZZk&t=307s
06:42 PM Loetmichel: 7kg... you can literally transport it onehanded ;)
06:43 PM andypugh: Loetmichel: Yes, I had one. Kept it in a spare cupboard in the kitchen.
06:43 PM andypugh: Hmm. Drehschrank!
06:44 PM Loetmichel: (no, i have no oversized hands, that thing IS so small ;)
06:44 PM andypugh: pink_vampire: I would suggest holders for the WNMG inserts, as those have 6 edges per insert so work out more cost-effective.
06:45 PM pink_vampire: do you know any good kit for them?
06:46 PM andypugh: pink_vampire: Only in the UK
06:47 PM pink_vampire: I need it for my small lathe
06:48 PM andypugh: I bought one of these in left and right recently: https://www.ebay.co.uk/itm/163833625890
06:48 PM andypugh: But that’s probably cheaper than you want, and bigger.
06:49 PM andypugh: They are fine for my lathe, but for a little lathe you might want a smaller clamping system to get the tool overhanf less.
06:49 PM andypugh: (And those inserts are pretty poor, as you moght expect)
06:50 PM pink_vampire: something with 10mm - 1/2" shank
06:51 PM pink_vampire: I want to get something common, and get it as a set, because right now, I have some HSS stuff with 8 bolts tool post, and I want to start working with modern tools without having to grind them inside the house.
06:52 PM pink_vampire: andypugh: ^
06:52 PM andypugh: I can’t see any WNMG holders with a 12mm shank
06:53 PM Loetmichel: for a 10mm shank i would suggest CCMT inserts not WNMG. way to big
06:54 PM andypugh: Ah, well, if you are buying a present for the lathe…. How about the AA set here? http://www.createtool.com/list.asp?cid=33
06:55 PM andypugh: Loetmichel: Yes, I was concluding the same.
06:56 PM pink_vampire: maybe a piston type
06:56 PM andypugh: pink_vampire: What is the distance from the top of the compound slide to centre-line of the lathe?
06:56 PM Loetmichel: and get the ones made for alu
06:56 PM Loetmichel: not the steel ones
06:56 PM andypugh: pink_vampire: Multifix > wedge > piston
06:56 PM Loetmichel: they are sharper, which is good for finish on such a small machine thats not THAT rigid
06:56 PM pink_vampire: andypugh: I was joking
06:57 PM andypugh: I didn’t get the joke, any sort of QCTP will be a win.
06:58 PM andypugh: But the Multifix AA size might be too big for your lathe.
06:59 PM pink_vampire: I have 26 mm from the top of the compound to the top of the 8 bolts tool post
06:59 PM andypugh: The important measure is top of the compound to the point of the tailstock centre
06:59 PM andypugh: (ie, to the spindle axis)
07:00 PM perry_j1987: o/
07:01 PM perry_j1987: you use that formula for thread depth, multiply the pitch by .614 to get the thread depth?
07:03 PM pink_vampire: andypugh: I'm trying to measure it and to take a picture
07:06 PM pink_vampire: 10 mm
07:06 PM andypugh: ?
07:06 PM andypugh: 10mm?
07:06 PM pink_vampire: one sec I'm taking a pic
07:08 PM andypugh: I wonder if this pic is real? Looks like biggest + smallest multifix: https://i.ebayimg.com/images/g/cLIAAOSw2gxYw6R6/s-l1600.jpg
07:11 PM pink_vampire: https://i.imgur.com/ZsVBwaP.png
07:12 PM pink_vampire: AWWWWWWWWWW this is soooooooo cute!!!
07:12 PM andypugh: Here is the size AAA one: https://www.ebay.co.uk/itm/smallest-Quick-Change-Tool-Post-of-the-world-system-Multifix-You-must-see/273660218572?hash=item3fb76b8ccc:g:paIAAOSwV7BcP65t
07:13 PM andypugh: But it only seems to take 1/4” tools
07:13 PM andypugh: Your measurement seems to be from the bottom of the toolholder slot to the centre.
07:13 PM pink_vampire: this is the Aaa nit AA or A0
07:13 PM pink_vampire: correct
07:13 PM pink_vampire: do you want me to remove the tool post?
07:14 PM andypugh: Not much point. I think the answer is “not a lot”
07:15 PM andypugh: You need > 18mm to even think about the AA size multifix.
07:16 PM andypugh: The AAA might work, but then you can only use really tiny tools.
07:16 PM andypugh: Is the lathe CNC?
07:16 PM pink_vampire: 14.14.2mm
07:17 PM pink_vampire: 14.2**
07:18 PM andypugh: You could consider removing the swivelling slide.
07:18 PM andypugh: (Especially if it is CNC)
07:18 PM pink_vampire: https://i.imgur.com/GtKvVkL.png 14.2
07:18 PM pink_vampire: it is manual
07:19 PM andypugh: But (for example) that Gotteswinter chap on Youtube has a solid top slide on his lathe.
07:20 PM pink_vampire: what do you mean??
07:20 PM andypugh: It looks like you could mill down the slide to make some space
07:22 PM pink_vampire: you mean to make the compound lower?
07:23 PM andypugh: I removed the top slide on my lathe, and replaced it with a solid block: https://photos.app.goo.gl/4QNfr5V6FNdT4puZA
07:24 PM pink_vampire: but the you can't cut angles
07:27 PM andypugh: https://youtu.be/bLn0Ch1_KQM?t=480 is someone (who is often online here) who has done the same on a manual lathe: https://youtu.be/bLn0Ch1_KQM?t=480
07:28 PM andypugh: Well, with a CNC you can still cut angles, very easily.
07:28 PM pink_vampire: I don't think this lathe is going to become a cnc in my life time.
07:29 PM andypugh: With a manual, well, how often have you actually used the top slide?
07:29 PM pink_vampire: ALL the time
07:30 PM andypugh: OK, so then the question is whether you can make room for a QCTP, if you want one.
07:30 PM andypugh: I suggest CAD.
07:31 PM pink_vampire: I have a cad model of the AA multifix
07:32 PM pink_vampire: I think I need to make the bottom part of the compound abit shorter,
07:33 PM andypugh: But at some point there isn’t enough metal to hold the big stud in the middle.
07:34 PM pink_vampire: the stud is
07:34 PM pink_vampire: M8 screw
07:34 PM pink_vampire: I can make bushing for it
07:34 PM andypugh: But if you make the top slide too thin it has nothing to grip into.
07:35 PM pink_vampire: the bottom
07:35 PM pink_vampire: let me take a pic
07:38 PM pink_vampire: https://i.imgur.com/lEMlxcl.png
07:38 PM pink_vampire: to face cut this bottom section abit
07:40 PM pink_vampire: what is the size of the shank on a 10mm or 1/2" tool?
07:40 PM pink_vampire: 10x10mm?
07:40 PM pink_vampire: 10x1/2"?
07:40 PM pink_vampire: andypugh: ^
07:42 PM andypugh: Depends in the tool. They are often, but not allways, square/
07:42 PM pink_vampire: ok, so let's say 10x10
07:46 PM pink_vampire: in the lowest position of the holder the tip of the tool will be 16mm from the bottom. instead if 14.2
07:47 PM pink_vampire: I might need to face the bottom of the tool shank to be 7mm instead of 10
07:47 PM pink_vampire: so it will be 10x7mm
07:48 PM pink_vampire: andypugh: what do you think?
07:48 PM andypugh: I am trying to imagine how it all fits together, but it does look like you could remove a fair bit of material there.
07:50 PM pink_vampire: but I don't want to modified the original part of the lathe
07:54 PM andypugh: Why not? It’s your lathe :-)
07:54 PM andypugh: Did you see what I did to my lathe?
07:55 PM norias: this lathe was made for turning
07:55 PM norias: and that's just what it'll do
07:55 PM norias: one of these days this lathe will throw
07:55 PM norias: chips all over you
07:56 PM norias: sometimes turning can be boring
08:09 PM pink_vampire: I want to keep it as original as possible
08:11 PM andypugh: That’s fine, I am like that with my 1930s living-room lathe.
08:12 PM andypugh: But it does seem like the original design was a bit strange in how high it put the top of the top-slide.
08:12 PM andypugh: Anyway, time to try to sleep. (success unlikely)
08:25 PM pink_vampire: it's so funny to find that the lead screw for the compound is 1/4"-20
08:35 PM -!- #linuxcnc mode set to +v by ChanServ
09:11 PM skunkworks: pink_vampire: is it left hand?
09:20 PM pink_vampire: skunkworks: no, regular 1/4" - 20
09:23 PM skunkworks: huh - interesting
09:24 PM pink_vampire: in did
09:24 PM pink_vampire: now I need to find nice tools for carabid inserts for aa holder
09:25 PM pink_vampire: 10mm shank or smaller
09:25 PM pink_vampire: skunkworks: what do you recommended as a general kit?
09:27 PM skunkworks: uh.. I don't know. I just usually see what my dad has ;)
09:29 PM pink_vampire: cool!
09:29 PM skunkworks: sorry.
09:29 PM skunkworks: I have played with the harbor freight lathe tooling kits. They work ok
09:31 PM pink_vampire: I have the small 1/4" shank, and it fine, but you can't find inserts for it, and I have no idea what rake angle it have.
10:20 PM coronamane is now known as dundermane