#linuxcnc Logs

Sep 26 2021

#linuxcnc Calendar

12:16 AM enleth: roycroft: you mean he used the toolpost to push/flex the bar into the center drill sideways?
12:43 AM roycroft: yes
12:44 AM roycroft: he put just a slight amount of pressure on the center drill
12:47 AM roycroft: it certainly changed the angle of the center drill bore slightly, but it made it more concentric
12:47 AM roycroft: he also set up a steady rest near the end before he did that
01:28 AM Deejay: moin
02:03 AM bjorkintosh: moin moin.
05:11 AM JT-Cave: morning
08:08 AM JT-Cave: debian 10 mate is not python 3 ready...
09:14 AM JT-Cave: hmm debian 10 lx something won't let you remove python 2 lol
11:16 AM Eric_: my shop smells, can't quite figure out what the smell is. Might actually have to clean it
11:23 AM skunkworks: Dead mouse!
11:28 AM t4nk_freenode: I got myself some drill bits.. some 'Stanley', 1.5 and 3mm, HSS-CNC DIN 338
11:29 AM t4nk_freenode: and a 'Bosch Professional' HSS-Tin 3mm
11:29 AM t4nk_freenode: there was some cobalt thingy I had my eye on, but I thought I had spent enough already
11:30 AM t4nk_freenode: now.. one would think that these bits should at least outperform some spungecake bits branded 'Ok'
11:30 AM Eric_: It smells more like live mice, tbh
11:33 AM t4nk_freenode: also bought a strip of 5mm alu... because come the end of the day I will at least have drilled a hole into Something other than my own feet
11:34 AM t4nk_freenode: and I shouldn't use the Tin bit in aluminium I think
11:40 AM roycroft: use wd-40 for lubricant in aluminium
11:48 AM t4nk_freenode: yeah, I got some wd-40 handy
11:59 AM roycroft: if you're drilling aluminium with a 3mm drill you should run the spindle at around 10,000 rpm
12:06 PM t4nk_freenode: really? that's a bit higher than I thought... I've got such a '12000rpm' spindle, what should I use to try and drill the steel bolt?
12:29 PM t4nk_freenode: heh... this is definitely looking better!
12:29 PM t4nk_freenode: mmmm it seems to be eating through quite nicely! using the 1.5mm bit
12:29 PM roycroft: 12000 rpm will be ok
12:29 PM roycroft: that's the problem with small drills, especially in non-ferrous metals
12:29 PM roycroft: you should be running the 1.5mm drill at 20,000 rpm
12:29 PM roycroft: for steel you want to go a lot slower
12:42 PM JT-Shop: I like using my interactive drill chart https://pasteboard.co/04ygZOH4KfLT.png
12:44 PM t4nk_freenode: think I'm about 1.5cm into the bolt now, about the size of the cutting part of the drill
12:44 PM t4nk_freenode: gonna switch to 3mm now
12:56 PM t4nk_freenode: there's little puffs of smoke sometimes... dunno if that's quite the way it should be ;)
01:09 PM t4nk_freenode: https://postimg.cc/gallery/CFBVkHz there, that concludes today's experiments
01:11 PM Tom_L: chips are not brown or blue so that's good
01:13 PM t4nk_freenode: mmm what can I say... I was almost sad yesterday.. I could barely dent the bolt... it was looking like a no-go
01:13 PM t4nk_freenode: but I had so much doubt about them there drill bits
01:13 PM t4nk_freenode: heh... today's result sort of match my expectations a bit more
01:14 PM t4nk_freenode: I have this 'tap&die' set... I'd like to tap some m3 in there... but I think the tap will break
01:15 PM t4nk_freenode: same cheapo stuff as the drill bits I think 'not for hardened metal' it says
01:15 PM t4nk_freenode: I think
01:16 PM Tom_L: for use on butter and wood
01:20 PM t4nk_freenode: I'll try anyhow ;)
01:20 PM t4nk_freenode: think I'm also learning something about tapping... so I drilled a 3mm hole
01:20 PM t4nk_freenode: 3mm tap is too smal, so I need a 4mm tap
01:20 PM t4nk_freenode: I thought I would need 3mm
01:20 PM Tom_L: there are tap drill charts
01:23 PM roycroft: there is this thing called "the internet"
01:23 PM roycroft: it has all the information
01:23 PM roycroft: you never need to guess
01:36 PM t4nk_freenode: 'I guess so' :b
02:38 PM t4nk_freenode: https://postimg.cc/gallery/wDgzvxG
02:40 PM t4nk_freenode: the 1.5mm bit was simply amazing I say, really impressive, especially after yesterday
02:42 PM t4nk_freenode: package specifically claimed it wouldn't run out... and it didn't. I had the feeling that I could have just kept on pushing it through if I wanted
02:42 PM t4nk_freenode: _really_ amazing. The 3mm bit was a bit more violent though, don't know if that's because the hole was pre-drilled
03:55 PM Eric_: I just overloaded a 1/4" hex extension. I was surprised when the drill bit stopped turning
04:18 PM roycroft: i went to every st. vincent de paul and goodwill store in town today, and no laptop powersuppy love was to be had
04:18 PM roycroft: i guess it's ebay time
04:38 PM JT-Shop: well one tree that was leaning toward the machine shop down and cut into logs only got cut short by a zillion mad ground hornets when I ran over the nest with the Kubota
04:39 PM JT-Shop: t4nk_freenode, here's a free tip make the hole a bit oversize for that small of a tap and go real slow
04:39 PM JT-Shop: the only taps I'll use are OSG Electolube
04:45 PM -!- #linuxcnc mode set to +v by ChanServ
04:58 PM JT-Shop: roycroft, do you need a bit of din rail?
04:59 PM roycroft: i haven't checked
04:59 PM roycroft: i think i have some
05:00 PM roycroft: if you're gonna toss some in, i won't complain, but i don't want to buy any right now
05:00 PM roycroft: and i'm not asking you to toss somein
05:02 PM JT-Shop: I have plenty of short bits of din I can toss one in
05:03 PM roycroft: thanks
05:03 PM roycroft: do you have din rail mounts for an rpi 4?
05:04 PM JT-Shop: amazon has some nice ones that mount it on the edge, I've used them before with data loggers on vibration welders
05:04 PM * JT-Shop makes a lot of panels
05:04 PM roycroft: yeah, i've seen a few
05:05 PM roycroft: and mounting on edge would be nice
05:05 PM roycroft: i'm going to try to keep the control box fairly small if i can
05:10 PM roycroft: really?
05:11 PM roycroft: usb chassis mount connnector from the uk - £8.92
05:11 PM roycroft: that's fine
05:11 PM roycroft: shipping to us: £99.99
05:11 PM roycroft: that's "economy" shipping
05:11 PM roycroft: i suspect someone does not want to ship to the us
05:12 PM roycroft: but won't come right out and say it
05:24 PM JT-Shop: shipping department is now closed for the day
05:24 PM JT-Shop: shipping from UK to US has always been real high
05:40 PM roycroft: yes, but it's not that high
05:41 PM roycroft: https://www.ebay.com/itm/391834560554
05:41 PM roycroft: and i know there are plenty of domstic sources for those
05:41 PM roycroft: it's just something i ran across on an ebay search
05:42 PM roycroft: note the delivery estimate of > 1 month for my £99.99
05:43 PM JT-Shop: I've had delivery of 3.5 months to AU
05:44 PM JT-Shop: that should be available at any electronics house in the us
05:45 PM JT-Shop: I won't even ship to the UK due to their import laws
05:46 PM JT-Shop: recent changes of their import laws
05:47 PM Eric_: I bought some stuff from RS electronics and it wasn't too bad. Unfortunately I bought 5 of everything instead of 6
05:47 PM Eric_: I guess that was in the before times though
05:59 PM roycroft: post-brexit the uk is pretty messed up when dealing with the rest of the world
05:59 PM roycroft: deling with itself as well
06:01 PM roycroft: folks are saying that if you're outwith the uk and you want to ship goods to the uk, no matter how small a seller you are, and no matter how minimal the sales, you have to register with hm revenue and customs, set up a payment account with them, and collect vat from your customer and remit it to them
06:01 PM roycroft: unless one is shipping a lot of stuff there, that's just not worth doing at all
06:03 PM XXCoder: i wonder if reshippers is forming now
06:04 PM roycroft: there are shipping agents in the us who handle that stuff now
06:04 PM XXCoder: of course
06:04 PM roycroft: but if you're a seller, you have to pay them for their work
06:04 PM roycroft: which means you have to up the cost of shipping
06:04 PM XXCoder: logical yeah
06:10 PM roycroft: it looks like ebay, amazon, etsy and the like collect vat directly from the buyer as part of the checkout/payment procedure, and remit that to hm revenue
06:10 PM roycroft: for sales <£135
06:11 PM roycroft: if the price is greater than that, then the seller still has to register and collect/remit vat
06:12 PM roycroft: so basically, either do a lot of business in the uk or do none at all
06:12 PM JT[m]: If it's greater then customs collects iirc the email from paypal
06:14 PM roycroft: i was just looking at the hmrc website, and it says that if it's greater than £135 then the seller must register and set up a payment account
06:15 PM roycroft: perhaps paypal have a way of dealing with it otherwise
06:15 PM roycroft: such that you're actually selling to paypal, and they're selling to the end customer
06:21 PM roycroft: i think i'll just 3d print a rpi4 din mount
06:21 PM JT[m]: In any case it's not worth the hassle for me to ship there.
06:22 PM XXCoder: i wonder how long before they realize requiring everyone to register and stuff is overkill
06:25 PM JT[m]: Dunno, I only ship to Canada, New Zealand, and Australia
06:26 PM JT[m]: I only use UPS for down under
06:37 PM roycroft: we're talking about the uk government here, xxcoder
06:37 PM roycroft: they don't ever figure that kind of stuff out
06:37 PM XXCoder: too bad
06:40 PM JT[m]: Yeah, I have friends in the UK and hope they don't need anything from me
06:40 PM XXCoder: well theres always paypal for money and such lol
06:41 PM JT[m]: At least they have EU Surplus
06:41 PM JT[m]: My shop uses PayPal
06:43 PM JT[m]: It's amazing how much the UK figured out during WW2
07:11 PM roycroft: does linuxcnc need a particular version of opengl glx to run properly?
07:11 PM roycroft: i am getting this when running it using x forwarding:
07:12 PM roycroft: _tkinter.TclError: Togl: X server has no OpenGL GLX extension
07:12 PM roycroft: yet on the x server, glxinfo shows this:
07:12 PM roycroft: server glx version string: 1.4
07:12 PM roycroft: amongst other things
07:24 PM roycroft: glxgears runs fine on the imac
07:25 PM XXCoder: missing some library?
07:25 PM XXCoder: https://stackoverflow.com/questions/8545291/opengl-glx-extension-not-supported
07:26 PM roycroft: if the glx extension were not installed/supported, glxgears would not run
07:26 PM roycroft: that's what puzzles me
07:26 PM roycroft: opengl glx is working on the mac
07:27 PM roycroft: but linuxcnc thinks it isn't
07:27 PM XXCoder: yeah
07:28 PM roycroft: which is why i was asking if there was a version issue
07:29 PM roycroft: the xorg stuff on macos is usually rather old
07:30 PM XXCoder: later menions bumblebee or something
07:30 PM XXCoder: dunno if its related to your case at all
07:42 PM roycroft: i should probably just wait until i get the linux laptop powered up again, and see if it works on that
07:43 PM roycroft: as that's the machine i'll likely use in the shop
07:43 PM roycroft: there's not much point spending a bunch of time debugging this with the x server running on my imac, because i'll never run linuxcnc that way
08:04 PM XXCoder: yeah good idea
08:05 PM XXCoder: get data before decision
08:15 PM roycroft: i was just wanting to do some work on the motion control electronics side while i'm working on the mechanical design
08:15 PM roycroft: but that's ok
08:15 PM roycroft: the new power adapter will probably arrive right around when my mesa board arrives
08:16 PM roycroft: and i've no idea when fedex will deliver my power supplies that have been sitting in troutdale for a week