#linuxcnc Logs

Feb 16 2021

#linuxcnc Calendar

12:28 AM miss0r: mornin'
12:42 AM CaptHindsight: miss0r: top o the mornin to yah sir (hat tip)
12:43 AM XXCoder: yo
12:43 AM miss0r: I like that ol'timey feel :]
12:43 AM miss0r: we only got 10cm of snow and already people are driving off roads, crashing, spinning around ect..
12:44 AM miss0r: its like this every time. every time is like the first time people see snow
12:44 AM XXCoder: yeah
12:44 AM XXCoder: here its pretty rare but always crashes
12:44 AM XXCoder: know what?
12:44 AM XXCoder: here is a rainy state.
12:44 AM XXCoder: tacoma is pretty rainy even for washington state
12:45 AM XXCoder: and we get accients often in rainy day
12:45 AM miss0r: makes you wonder
12:45 AM XXCoder: yeah
12:46 AM miss0r: At the moment I am just setting my tools short of doing something real machining on the mini lathe
12:46 AM XXCoder: me, i finally got mini back in comission with new sdcard
12:46 AM XXCoder: its printing very nicely
12:47 AM miss0r: nice. what quality/accuracy are you getting?
12:48 AM XXCoder: quality is ok, its few years old tech
12:48 AM XXCoder: with 4 year old filiment
12:48 AM XXCoder: mp select mini v2 heh
12:48 AM miss0r: yeah. but what precision can you expect of the prints? what tolerances?
12:49 AM XXCoder: oh dunno my tests seem to be good enough
12:49 AM XXCoder: havent made closer tol parts
12:50 AM miss0r: I have a steep learning curve to climb to learn the lathe cad/cam in mastercam
12:51 AM XXCoder: nice
12:52 AM miss0r: its all upside down!
12:52 AM CaptHindsight: we got a few more cm today as well
12:52 AM miss0r: I need to see if I can swap axis or something. its too confusing to look at for me :D
12:52 AM miss0r: what are you up to totalt on the ground?
12:53 AM XXCoder: here maybe inch or 2 snow left. raining is getting rid of snow
12:53 AM CaptHindsight: was on the phone earlier with someone that got 80cm last week and 25cm more later today
12:53 AM CaptHindsight: maybe 30cm total this month
12:53 AM CaptHindsight: over here
12:53 AM miss0r: I want 80cm ! :D
12:54 AM miss0r: and go plow through it with my land rover
12:54 AM CaptHindsight: been mostly cold well under 0C, -10 to -30C at night
12:54 AM miss0r: it would seem our winter is in retreat now. The snow is melting outside
12:55 AM CaptHindsight: next week for us
12:56 AM miss0r: I like how your weather service has a chance at a trustworthy answer. In Denmark the ocean is close up all around. This makes it hard to do any real predictions. The weather can change realy fast
12:56 AM CaptHindsight: I'm 800m (1300Km) from the nearest Ocean but we have large fresh water lake here
12:57 AM CaptHindsight: so we get lake effect snows
12:57 AM miss0r: I have no idea what that is :D
12:57 AM CaptHindsight: will snow several cm within 70km
12:57 AM CaptHindsight: of the shore
12:58 AM miss0r: nice
12:58 AM miss0r: we don't have any lakes that are large by american standards here.
12:58 AM miss0r: you guys have lakes that are larger than Denmark :D
12:58 AM CaptHindsight: 160km across and nearly 500km long
12:59 AM CaptHindsight: https://goo.gl/maps/9GNoxLenkrVF2GSy6
12:59 AM miss0r: That is a pretty big lake. That is like the size of sealand :D
01:00 AM CaptHindsight: I never directly compared but yeah it's bigger than Denmark
01:00 AM miss0r: hehe
01:01 AM CaptHindsight: winds are mainly from the west so the east sides of each lake can get tons of snow
01:02 AM miss0r: that sounds nice.
01:02 AM CaptHindsight: and sometime we are on the back of a storm so the west side of the lake gets lots of snow
01:02 AM miss0r: I realy wnat more snow :D
01:02 AM CaptHindsight: it's a fun change but I've had enough
01:02 AM CaptHindsight: I have too much to get done
01:03 AM miss0r: hehe yeah. you'd reach that point
01:03 AM CaptHindsight: and the snow makes a mess, even inside
01:03 AM CaptHindsight: it sticks to the vehicles
01:03 AM CaptHindsight: and then melts inside, plus they put salt down on the roads so you end up with a salt pile on the ground when it dries
01:04 AM miss0r: i know... we salt the roads like crazy here too
01:04 AM CaptHindsight: miss0r: how is the thumb?
01:04 AM CaptHindsight: oh didn't know that
01:04 AM miss0r: must be an agreement between the government and the car manufactures
01:05 AM CaptHindsight: i thought we only made sure they rust out over here :)
01:05 AM XXCoder: we use beet juice here
01:05 AM XXCoder: not as corrosive but not as powerful. good enough since freezing is uncommon here
01:05 AM miss0r: The thumb feels like a thumb :) This friday(in the morning) its gonna get removed(the cast that is :D)
01:06 AM miss0r: which I am REALY REALY looking forward to!
01:06 AM CaptHindsight: keep the thumb :)
01:06 AM miss0r: is all I can do... :D
01:06 AM CaptHindsight: miss0r: what do you use for tires on the Rover?
01:07 AM miss0r: michelin xzl
01:07 AM CaptHindsight: https://images.simpletire.com/images/line-images/17624/17624-sidetread/toyo-open-country-a-t-iii.png been using these
01:07 AM miss0r: looks nice
01:08 AM CaptHindsight: very knobby
01:08 AM CaptHindsight: the XZL
01:08 AM miss0r: The 101" land rover has 255/100-r16
01:09 AM miss0r: Yeah. they are not realy for snow. and ABSOLUTLY not for icey roads :D its like wearing roller skates :]
01:09 AM miss0r: but good for mud/sand which is what I am mostly confronted with
01:10 AM miss0r: Those tires of yours look like they might do well in cold weather
01:10 AM CaptHindsight: when new they were great on ice
01:11 AM CaptHindsight: will replace them this year
01:11 AM CaptHindsight: put over 70k km on them
01:11 AM miss0r: I hope mine will last a LONG time. they are realy expensive. The size is basically non existant. Michelin has the tire size in their catalogue, but they had to make them when I ordered.
01:11 AM CaptHindsight: sorry > 100k km
01:12 AM miss0r: pretty decent
01:12 AM CaptHindsight: i have a little body work to do
01:13 AM CaptHindsight: over 500K km on it
01:13 AM miss0r: yeah. with salty roads, body work is needed after that amount of mileage
01:14 AM CaptHindsight: just some small spots, but get them before big spots
01:14 AM CaptHindsight: just lower door skins
01:14 AM miss0r: always a trouble zone
01:14 AM CaptHindsight: I'll spend a week stripping and welding and then new paint job
01:15 AM miss0r: I've always taken door apart(on my veteran cars that is) and sprayed them down with some corrosion resistant stuff
01:15 AM miss0r: on the inside that is
01:15 AM XXCoder: you could use truck bed liner for under too
01:15 AM CaptHindsight: yeah, the whole vehicle will have a thick coating from the mid body down
01:15 AM XXCoder: tape over stuff then undercoat
01:16 AM miss0r: Indeed. I don't like undercoat. not on the land rovers anyway. I've taken them apart and gotten the chassis hot dipped galvanized
01:16 AM miss0r: and the rest is alu
01:17 AM miss0r: well.. the door frames are steel with alu folded over it. which is a shitty design if I ever saw one.
01:17 AM miss0r: I've made new door skins where I placed a plastic strip in the fold, so the alu does not touch the steel. that makes for a happier life
01:18 AM XXCoder: less noisy I guess
01:19 AM miss0r: Hehe. not that I have noticed. theres plenty of other stuff to make noice in a 50yo landy
01:19 AM miss0r: Anyway, I have a video conference meeting in a moment. See you later
01:19 AM CaptHindsight: see you
01:20 AM XXCoder: later
03:25 AM Deejay: moin
03:38 AM MarcWeber: Is there any tool which can use a black/white image and generate engraving gcode ?
04:50 AM CaptHindsight: MarcWeber: http://www.scorchworks.com/Dmap2gcode/dmap2gcode.html
04:53 AM CaptHindsight: https://github.com/robomechs/image-to-gcode
04:53 AM CaptHindsight: http://www.linuxcnc.org/docs/2.4/html/gui_image-to-gcode.html
04:55 AM CaptHindsight: https://all3dp.com/2/inkscape-g-code-all-you-need-to-know-to-get-started/
05:19 AM JT-Cave: 1°F
05:35 AM Tom_L: morning
05:35 AM Tom_L: -13F
05:35 AM miss0r: Morning tom
05:36 AM miss0r: 35f here. and alot of dripping from last nights snow
06:49 AM * JT-Cave starts the water bowl clock
07:19 AM JT-Cave: hmm -2°F but sunny
07:39 AM JT-Cave: ASUS Pro business motherboards provide enhanced features to smooth your IT operations, including comprehensive system protection
07:39 AM JT-Cave: I think that is my problem with the motherboard
07:41 AM JT-Cave: Operating System Windows® 10 64-bit
07:41 AM JT-Cave: or that
07:47 AM htasta: what problem is it you're havin JT-Cave?
08:12 AM JT-Cave: black screen blinking cursor... however Linux Mint 20.1 just worked
08:16 AM JavaBean: well, yeah
09:35 AM roycroft: it appears that all shipments everywhere are delayed
10:31 AM internut: anyone here use Flatcam?
10:31 AM internut: or do PCB layout on a CNC machine?
10:37 AM W1N9Zr0: sure
10:39 AM internut: I cannot get Flatcam installed on a Mac
10:39 AM internut: I successfully installed it on windows, but, I only have one computer with windows on it
10:39 AM internut: and it's not a very good one
10:41 AM internut: but, I'm just starting out, so, I'm open to basically any workflow that works
10:43 AM W1N9Zr0: can't help you with the first one, I don't use a mac
10:43 AM W1N9Zr0: if it's a simple board with no drilling, you could use http://fabmodules.org/
10:44 AM internut: well there's going to be drilling
10:44 AM internut: (I hope)
10:44 AM internut: I will need to do 2-sided boards
10:46 AM internut: I just got a CNC 3018
10:51 AM roycroft: i don't know anything about flatcam, but i use macs, and you can run windows on a mac using something like parallels or vmware fusion
10:51 AM internut: Yeah, that's true
10:51 AM internut: do you do PCBs?
10:52 AM roycroft: and a quick check shows that there is a linux version of flatcam, so if you don't want to buy a windows license just for flatcam you can install linux in a vm and install flatcam on that platform
10:52 AM roycroft: i've made some by hand, but not really
10:52 AM internut: yeah, that didn't work
10:52 AM internut: I tried installing flatcam
10:52 AM roycroft: oh, there's a brew port for os x
10:53 AM internut: and it gives errors indicating that it couldn't find some python libraries
10:53 AM internut: hmmmm
10:53 AM internut: lemme try brew
10:53 AM internut: I might have missed that
10:53 AM roycroft: you might ask the folks on #machomebrew
10:53 AM roycroft: http://flatcam.org/manual/installation.html#osx
10:54 AM internut: Error: No available formula or cask with the name "flatcam".
10:56 AM internut: Chucks-MBP-8:flatcam chuck$ python FlatCAM.py
10:56 AM internut: Traceback (most recent call last):
10:56 AM internut: File "FlatCAM.py", line 4, in <module>
10:56 AM internut: from PyQt5 import QtWidgets
10:56 AM internut: ImportError: No module named PyQt5
10:58 AM roycroft: again, the folks on #machomebrew will probably be able to better help you than we an
10:58 AM roycroft: can
10:59 AM internut: that's fine, but, I'm not married to Flatcam either
10:59 AM roycroft: i've not much experience with brew, but it has its quirks
10:59 AM roycroft: i find it easier to just spin up a linux vm when i need to run a linux app on a mac
11:00 AM internut: I tried to install Flatcam in linux
11:00 AM internut: same problem as in the mac
11:07 AM enleth: this is what happens when you buy cheap "bar stock cutoffs": https://matrix.hackerspace.pl/_matrix/media/r0/download/hackerspace.pl/zrDTgXwysCryKEWhUEmKbfRU/IMG_20210216_173152.jpg
11:08 AM enleth: the thicker ones are likely to be training projectiles for the 115mm cannon of a T-62 tank
11:08 AM roycroft: that stuff looks rather gnarly
11:09 AM enleth: it's probably decades old
11:09 AM roycroft: the tooling you'll destroy trying to turn the cutoffs will probably cost more than the cutoffs
11:10 AM enleth: funny thing is, I have a huge stock of brazed carbide tooling of a similar vintage to those "cutoffs"
11:10 AM enleth: perfect for tasks like this
11:12 AM enleth: who cares if they chip
11:45 AM unterhaus_: scheduled a vaccine appointment next week, going to beholding my breath until then
12:02 PM roycroft: i'm still at least a month away from being eligible
12:02 PM roycroft: probably longer
12:03 PM roycroft: and this weather mess back east is probably going to further delay vaccine shipments
12:46 PM JT-Shop: normally with the sun out I'd be out there on my 65 year old Ferguson grading the snow off the road... but I'm out of energy today after yesterday
12:53 PM Jymmm: what was yesterday?
12:53 PM roycroft: that's what grandkids are for
01:03 PM sinned6915: I feel dumb asking this b/c I lost the link I got from here before...
01:04 PM sinned6915: can anyone tell me the tachometer / encoder chip works off of a rotating magnet?
01:04 PM sinned6915: kind of like a hall sensor, but instead of a radial sensing device, it reads a planar magnet
01:06 PM sinned6915: AS-something? AZ-something?
01:08 PM Thorhian: So I was just learning a little bit about EtherCat. I was wondering if there is a hal driver built into linuxCNC already or if you have to apply it seperately (out of tree)?
01:26 PM JT-Shop: there is some info on the forum about that
01:35 PM CaptHindsight: sinned6915: something to read a linear magnet strip and convert to incremental output?
01:35 PM CaptHindsight: https://www.usdigital.com/products/accessories/interfaces
01:35 PM CaptHindsight: https://www.ichaus.de/keyword/encoder%20ics
01:38 PM CaptHindsight: https://ams.com/linear-position
02:00 PM sinned6915: CaptHindsight: thank you. the AMS rotatary ones were the ones I was thinking of.
02:00 PM sinned6915: https://ams.com/angle-position-on-axis
02:02 PM CaptHindsight: yeah you explained it right, I misconfabulated it
02:02 PM sinned6915: now i have to ficgure out to make it work
02:03 PM sinned6915: https://ams.com/as5040adapterboard/
02:03 PM Tom_L: you just plug it in and hit the autoconfig button
02:03 PM CaptHindsight: don't ask how in ##electronics
02:03 PM sinned6915: as i read the datasheet for this, it seems to be almost plug and play
02:04 PM CaptHindsight: the devs boards just about are, you just have to mount and shield them
02:06 PM sinned6915: I am trying to figure out if this will work as a tach sensor
02:06 PM sinned6915: https://lounge.mikkel.cc/uploads/a8eda71d0ea5a3fe/image.png
02:08 PM CaptHindsight: https://ams.com/documents/20143/36005/AnglePositionOnAxis_AN000271_2-00.pdf/d3bc1235-a3da-7e15-15bf-624e9ff0c389
02:08 PM CaptHindsight: Application Note AN5000 Magnet Selection Guide
02:09 PM sinned6915: CaptHindsight: thank you. I did not think to look for that kind of guide.
02:09 PM sinned6915: How can I repay you?
02:09 PM sinned6915: Did you get enough snow yesterday?
02:09 PM CaptHindsight: send cat pictures
02:09 PM sinned6915: I got plenty, happy to share some if you want ;)
02:09 PM sinned6915: LOL
02:10 PM CaptHindsight: I'm just glad we are hitting 20F today
02:11 PM CaptHindsight: space heater is short cycling, needs a new fan motor
02:12 PM sinned6915: i know! a couple more degrees and it will be shorts weather
02:12 PM CaptHindsight: whole space heater $1200, drop in fan motor $389
02:13 PM sinned6915: baseboard heater thermo switch broke: one of the freaking rivets holding the brass terminal connectors failed
02:13 PM CaptHindsight: I hear that the Philly area has close to 3ft of snow this month
02:14 PM sinned6915: almost looks like fatigue/fracture surface
02:14 PM CaptHindsight: yeah I noticed that thermal sensors at the supply houses are $80 and 5 for $20 on ebay
02:15 PM sinned6915: $35 at big box store, but the new one mounts with 2 screws, the old is thru-hole shaft mount.
02:16 PM sinned6915: so diddlyfussing to put in new one.
02:22 PM roycroft: are you talking about philly-delphia?
02:23 PM JT-Shop: usps just showed up... been mia since last wednesday
02:23 PM roycroft: that's impressive
02:23 PM JT-Shop: I'm not holding my breath waiting for ups
02:24 PM roycroft: ups bailed on me today
02:24 PM roycroft: apparently, because there is no bad weather between reno and here, they can't drive from reno to here
02:24 PM JT-Shop: he drives a jeep so he can get stuck deeper than regular cars
02:24 PM roycroft: their trucks must be empathetic with the back east ups trucks
02:59 PM JT-Shop: hmm ups is out delivering but passed me by again
03:05 PM roycroft: your tried & true oil is tried & true wax on a day like today anyway
03:10 PM JT-Shop: not too worried about that more worried about the box full of Mesa cards
03:40 PM roycroft: yeah, having inventory is nice
03:40 PM roycroft: especially when you have orders
03:41 PM roycroft: fortunately, most folks are at least a bit understanding about shipping delays due to the weather
03:41 PM roycroft: i'm kind of pissed off, though, about my laptop
03:41 PM roycroft: it was supposed to ship friday, and they didn't get around to it
03:41 PM roycroft: now they can't ship because no fedex
03:42 PM roycroft: if they had shipped it when they said they would i'd have it today
03:42 PM roycroft: or maybe tomorrow
03:42 PM roycroft: now i have no idea
03:42 PM roycroft: but the stuff that was scheduled to ship this week i understand not going out on time
03:50 PM Tom_itx: what? you expect ppl to do their jobs?
03:50 PM Tom_itx: wtf!
03:51 PM Tom_itx is now known as Tom_L
03:57 PM roycroft: expedited shipping is not useful if you don't ship on time
04:03 PM Thorhian: Indeed.
04:08 PM Thorhian: So I was told that controlling servos in real time over modbus isn't a good idea (Not realtime ready) in linuxCNC. Is this the case in your people's experiences?
04:37 PM rs[m]: Thorhian: modbus over rs485 is probably too slow. modbus over tcp is a very strange thing to begin with. modbus over udp is non-standard. modbus doesn't have a standard commands for servos. i suspect servo drives with modbus capability use that for parameters but not to transport realtime position/velocity information
05:24 PM * JT-Cave used the almost done workbench to transform some crown molding into pulls for the blast gates
05:24 PM JT-Cave: it was fun having a planing stop even if it is just a clamp and piece of 1/4" baltic birtch
05:25 PM JT-Cave: birch even
05:32 PM veegee: Can anyone recommend ear plugs that emphasize comfort above all else? Noise reduction doesn't have to be like the 32db foam plugs
05:32 PM veegee: Those are great but they hurt after several hours
05:33 PM veegee: I'm just looking to attenuate ambient fan noise to help me focus on my work
05:34 PM veegee: For example, something as light as the old plastic-only apple ear buds (not the ones with the rubber tip that go inside the ear canal) are better than nothing
05:41 PM Loetmichel: veegee: get "mickey mouses" aka over ear dampeners
05:41 PM Loetmichel: MUCH more comfortable than in-ears for long periods of time
05:41 PM veegee: Loetmichel I have these: https://www.amazon.ca/3M-Peltor-Earmuffs-Chartreuse-X4A/dp/B00CPCHADQ
05:42 PM veegee: They're amazing, I love them
05:42 PM veegee: BUT I sweat a lot
05:42 PM Loetmichel: yep, thats the kind i meant
05:42 PM veegee: they squeeze rather tight as well. But they're highly effective ear protection.
05:42 PM Loetmichel: there are some with air exchange
05:42 PM veegee: But they don't work with eye protection and respirators nearly as well
05:43 PM veegee: Because the part of the eye protection stem breaks the seal
05:44 PM veegee: Which means I can only use eye goggles with an elastic band or something as opposed to the kind that are like regular eye glasses
05:44 PM Loetmichel: i had some in-ear dampeners made for my stage audio tech job at a "hörgeräteakustiker"... not cheap, but dampening LINEARLY for 20dBa, and made to fit the ear (actually cast in place)
05:45 PM Loetmichel: those were nice for comfort, but expensive
05:45 PM Loetmichel: and about 30 years ago
05:57 PM veegee: Hmm yeah audio grade custom fit stuff is an option. I'll have to look into that
05:57 PM veegee: Like even a 6db reduction in noise is good, doesn't have to be high at all
05:58 PM veegee: The noise in the background is fan noise, not even close to harmful. This is just for comfort purposes, it's not a safety thing
05:58 PM veegee: My industrial unit doesn't have a pipe for distributing air evenly, so I have several blowers to circulate the air along the length of the unit
05:59 PM veegee: But sometimes I have computer-only work to do so I need the focus during those times. I need to build a proper air circulation system soon
06:00 PM veegee: I guess I should also pad the walls with sound absorbing material since I'm going to move my high end speakers and audio stuff here as well
06:03 PM Loetmichel: hehe, lets just say: try to CAD in a big workshop with 2 air compressors, 2 CNC mills AND 4 3d printers running... no to mention a dozen workers working, hammering, drilling and chatting
06:03 PM Loetmichel: you get used to it after a while
06:03 PM Loetmichel: ... only problem: i am the productcion manager... half of the day i have to answer workers questions instead of designing a new device ;)
06:09 PM veegee: Not CAD, programming work and such for my "day job", the software engineering company I own
06:09 PM JT-Cave: yippee tomorrow is big breakfast day
06:09 PM veegee: Don't have to do it every day, but things come up sometimes
06:09 PM veegee: And I'm the only person in the workshop 95% of the time
06:10 PM veegee: so the only sound are the blower fans and the annoying cat my sister asked me to take care of for a while
06:10 PM veegee: he meows and whines all the time for attention, and yes he's totally healthy
06:10 PM veegee: If you let him sit on your lap, he'll purr and fall asleep, but ain't nobody got time for that all day
06:13 PM internut: does linuxcnc run on ARM?
06:13 PM internut: like a Pi or a Nano
06:14 PM veegee: internut yes
06:14 PM internut: cool
06:14 PM * veegee http://linuxcnc.org/docs/2.8/html/getting-started/getting-linuxcnc.html#_installing_on_raspbian_10
06:14 PM JT-Cave: rpi4 yeah
06:14 PM veegee: internut what do you mean a "Nano"?
06:14 PM internut: Jetson Nano
06:14 PM veegee: never heard of that before
06:14 PM veegee: Oh that
06:14 PM internut: think Pi on steroids
06:15 PM JT-Cave: Jetsons was my favorite tv show
06:15 PM veegee: It still is
06:15 PM roycroft: my blasting cabinet gun just blew up :(
06:15 PM internut: I've got a couple Nanos sitting here
06:15 PM veegee: most stuff on TV these days is trash
06:15 PM roycroft: it's time to upgrade that cabinet anyway
06:15 PM roycroft: fortunately i was on the last piece, which is the upper wheel cover
06:16 PM roycroft: and i hadn't started it yet, so i can leave it in the original paint for now, and repaint it when i get the blasting cabinet upgraded
06:20 PM internut: k, I'll build a raspbian installation
06:20 PM JT-Cave: wore it slap out?
06:21 PM roycroft: the gun is the one the blast cabinet came with - the body is a cheap pot metal casting
06:21 PM roycroft: it broke in half while i was using it
06:21 PM JT-Cave: damn
06:22 PM roycroft: i've been meaning to upgrade the cabinet for years
06:22 PM roycroft: but i never got around to it
06:22 PM JT-Cave: I built my blast cabinet from scratch
06:22 PM roycroft: now is the time
06:22 PM roycroft: yeah, i saw your pics of that
06:22 PM internut: sometimes these decisions make themselves
06:22 PM roycroft: mine's never worked great
06:22 PM roycroft: the hf one has a suction tube for drawing the media
06:22 PM roycroft: which does not work well
06:23 PM roycroft: i'm going to go ahead and put a metering valve on the bottom of the cabinet
06:23 PM JT-Cave: that works great on mine
06:23 PM roycroft: and i think i'll get a foot pedal for controlling the air flow, so i can get a smaller gun without a trigger
06:23 PM * JT-Cave goes out one more time to tuck the pullets in
06:24 PM roycroft: yeah, i'm going to order the gun right now, and head over to jerry's to buy some parts to make the metering valve
06:24 PM JT-Cave: interesting, I just use a ball valve
06:24 PM roycroft: depending on the cost of the foot pedal i might just use a ball valve too
06:24 PM roycroft: i'm also going to put a short air hose on the inside of the cabinet, so i can blow the blasting media off my parts before i open the door to remove them
06:25 PM roycroft: and i'm thinking about lowering the shelf as well
06:25 PM roycroft: i already have a nice extractor for it
06:25 PM roycroft: and i upgraded the lighting a long time ago
06:28 PM JT-Cave: I need to add a blow gun to the inside of mine to clean the window off
06:29 PM roycroft: hf have some gravity feed guns really cheap
06:30 PM roycroft: maybe i'll get one of those to finish this project, and take my time doing the rebuild of the blast cabinet
06:30 PM roycroft: it would be nice to do a really good job on the rebuild
06:30 PM roycroft: sealing it up with caulk instead of that weatherstripping tape that dries out over time
07:27 PM internut: I'd like to be able to do the following: Load a gcode, see a visualization, maybe translate and scale the gcode, and send it to my CNC mill
07:27 PM internut: did I find the right tool?
07:28 PM internut: (linuxcnc)
07:29 PM internut: found a video
07:30 PM Tom_L: linuxcnc interprets the gcode to machine movements
07:32 PM internut: I think the gcode IS the movements
07:33 PM internut: I'm assuming it's a gcode player
07:33 PM XXCoder: linuxcnc gets gcode and controls machine in according
07:33 PM internut: can it do any visualization of the gcode?
07:33 PM XXCoder: what type of visualization?
07:34 PM Tom_L: axis displays a representation of the code
07:34 PM Tom_L: http://linuxcnc.org/docs/2.8/html/gui/axis.html#_axis_display
07:36 PM internut: so, I'm going to try to make some PCBs
07:37 PM internut: and I have something that will convert the gerber files to gcode, but I may need to translate it (at least)
07:37 PM internut: can linuxcnc allow me to set the home position?
07:40 PM CaptHindsight: home, away, limit, e-stop, all supported
07:41 PM internut: okay, great
07:41 PM internut: it's my first CNC
07:43 PM CaptHindsight: there is also an image with LCNC for the Rpi
07:44 PM CaptHindsight: http://linuxcnc.org/downloads/ LinuxCNC 2.8.0 Raspberry Pi OS based on Debian 10 Buster
07:45 PM internut: well, I've almost got it installed
07:46 PM CaptHindsight: http://linuxcnc.org/docs/2.5/html/common/user_intro.html
07:47 PM CaptHindsight: http://linuxcnc.org/docs/html/code/code-notes.html
07:47 PM CaptHindsight: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?EMC_Components
07:49 PM internut: okay, so I rebooted after installing the real time kernel
07:49 PM internut: and it's not accepting any mouse or keyboard
07:53 PM CaptHindsight: preempt_rt on a Rpi4 or ??
07:54 PM CaptHindsight: internut: ^^
07:54 PM internut: http://linuxcnc.org/docs/2.8/html/getting-started/getting-linuxcnc.html#_installing_on_raspbian_10
07:54 PM internut: following these instructions ^^^^^^^
07:54 PM CaptHindsight: https://forum.linuxcnc.org/9-installing-linuxcnc/40466-linuxcnc-2-8-0-pi4-img-no-usb-on-raspberry-pi-8gb
07:55 PM CaptHindsight: yeah there was some hardware change on some versions of the Rpi4
07:55 PM internut: let me ask you something
07:55 PM CaptHindsight: haven't stayed on top of the drama
07:55 PM internut: will the first one work on a pi three?
07:55 PM internut: I've got more of those that are doing nothing
07:56 PM XXCoder: pi3 is underpowered, but then youre not doing much complex
07:56 PM CaptHindsight: This issue has a fix in kernel 5.8 (currently in experimental): lkml.org/lkml/2020/5/5/998
07:57 PM internut: oh well, I'll try the pi 4 with the new install
07:57 PM CaptHindsight: looks like the issue started last month
07:58 PM internut: wow, cool. I crashed my irc client
07:58 PM internut: can someone paste that link again please?
07:58 PM CaptHindsight: heh which link?
07:58 PM internut: the one for linuxcnc on pi 4
07:59 PM CaptHindsight: https://forum.linuxcnc.org/9-installing-linuxcnc/40466-linuxcnc-2-8-0-pi4-img-no-usb-on-raspberry-pi-8gb
07:59 PM CaptHindsight: http://linuxcnc.org/docs/2.8/html/getting-started/getting-linuxcnc.html#_installing_on_raspbian_10
07:59 PM internut: oh, is that first one an image?
07:59 PM CaptHindsight: also https://gnipsel.com/linuxcnc/uspace/rpi4-rt.html
08:01 PM CaptHindsight: http://linuxcnc.org/downloads/ LinuxCNC 2.8.0 Raspberry Pi OS based on Debian 10 Buster
08:02 PM CaptHindsight: an image with LCNC for the Rpi ^^
08:02 PM CaptHindsight: internut: beware of issues with 32b kernel on the newer 8GB Rpi4
08:03 PM CaptHindsight: the forum thread gets into that
08:12 PM roycroft: so that went relatively well
08:12 PM roycroft: the gravity fed blasting gun works fine
08:12 PM roycroft: it cuts fast, is comfortable to use
08:13 PM roycroft: but i run out of media in about 30 seconds, and it takes a minute to refill
08:13 PM internut: how big an SD card is needed to install these images?
08:13 PM internut: do they resize?
08:13 PM roycroft: internut: 42
08:14 PM internut: I've got a 16 and a 128
08:14 PM roycroft: in seriousness, i think 32GB is what you need
08:14 PM roycroft: so you can use the 128
08:14 PM internut: okay
08:15 PM internut: I mean it's a 1.2G image
08:15 PM internut: but whatever
08:15 PM roycroft: you can try the 16GB one
08:15 PM internut: it really doesn't matter
08:16 PM roycroft: but if the rpi has 8GB of ram you should have at least 8GB of swap
08:16 PM roycroft: so that's half your sd card just for swap
08:16 PM internut: I think it's 4GB
08:17 PM CaptHindsight: don't you DD them on to the sd-card?
08:18 PM internut: that's what I was going to do
08:18 PM roycroft: so now i have time to figure out what blast gun to get for my blasting cabinet
08:18 PM roycroft: if anyone has one they like i'd appreciate hearing about it
08:19 PM internut: I actually have a small sand blaster, but it's laughable
08:19 PM internut: :)
08:19 PM roycroft: that's kind of why i bought this gravity fed one today - it cost me $16 with a coupon, and a new gun for the blasting cabinet will be more like $50
08:19 PM roycroft: if i bought the wrong one because i'm in a hurry that's money down the toilet
08:20 PM roycroft: the gravity fed one buys me time to get the proper one, and i can use it for other parts that are too big to fit in the cabinet
08:54 PM ziper: what other methods of holding a chuck in a tailstock exist?
08:54 PM ziper: I'm not sure the morse taper is just stuck or what
08:55 PM ziper: but when I back it off all the way the chuck doesn't come out
08:55 PM enleth: ziper: someone might have used a morse adapter with no tang
08:55 PM ziper: so I just gotta hit it?
08:56 PM enleth: those are often too short at the very back and do not reach the end of the tailstock quill screw, so they're not ejected properly
08:56 PM enleth: pretty much
08:56 PM enleth: smacking it with a soft face deadblow hammer might do it
08:56 PM ziper: brb
08:57 PM Tom_L: needs the shock of a hard mallet
08:57 PM enleth: or you can pull out the tailstock handwheel and screw, to hit the end of the morse adapter with a drift
08:57 PM Tom_L: deadblow _might_
08:58 PM Tom_L: that's what brass mallets are for
08:58 PM enleth: I meant a proper deadblow, not those orange things wrapped in plastic
08:58 PM XXCoder: orange things work well for bunch of uses but need bit stronger for that
08:58 PM enleth: I have something like this: https://www.amazon.co.uk/Thor-Dead-Blow-Nylon-Hammer-2-Lb/dp/B0001P0XWY
08:59 PM Tom_L: they're excellent on fingers
08:59 PM ziper: no dice
08:59 PM ziper: i used the orange thing wrapped in plastic
08:59 PM enleth: besides a blacksmithing hammer, this is the best impulse applicator I have
08:59 PM enleth: but it doesn't chew up stuff it hits
08:59 PM ziper: is there any chance there is a fastener holding it together
08:59 PM enleth: that would be extremely unusual and weird
09:00 PM Tom_L: mt2?
09:00 PM Tom_L: i doubt it
09:00 PM ziper: ok i will get a bigger hammer
09:00 PM Tom_L: now we're talkin...
09:00 PM enleth: one more thing you can try is get a block of aluminum or brass, lay it on the tailstock body against the back of the chuck and hit that with the biggest hammer you have
09:00 PM ziper: I assume the 50 year old oil has just gotten sticky
09:00 PM enleth: doesn't matter if its soft face or not, it'll screw up the block
09:01 PM Tom_L: i would do what enleth just suggested
09:01 PM Tom_L: a softer metal than the tool
09:02 PM Tom_L: i've got some brass bar stock that's all it's for
09:02 PM enleth: that way even a 15lb demolition sledge can be a machine maintenance tool
09:02 PM XXCoder: if dont have one, use wood
09:02 PM XXCoder: pine something
09:02 PM enleth: tree carcass softens the impulse, unfortunately
09:02 PM Tom_L: yeah and flakes off and gets in everything
09:03 PM XXCoder: tom true
09:03 PM enleth: ziper: if that fails, try to remove the handwheel and screw
09:03 PM enleth: applying force exactly in line with the morse adapter might do it
09:04 PM Tom_L: there's no slot in the tailstock for a wedge removal tool?
09:04 PM enleth: when those tapers get royally stuck, you're at a huge force disadvantage if you're not hitting inline
09:06 PM ziper: well it felt good to hit things with the hammer
09:06 PM ziper: but nothing happened
09:06 PM ziper: I will try going through the center
09:06 PM XXCoder: make sure to protect area it can fall on
09:06 PM ziper: I don't have to worry about damaging anything since it is just the end face of the taper, right?
09:07 PM Tom_L: unless you mushroom the end
09:07 PM enleth: ziper: you can stuff a piece of round stock in there and reinstall the screw, effectively extending it
09:07 PM enleth: then try to eject it using the screw
09:08 PM enleth: if the reason it's not ejecting is the lack of tang, that could do it without brute force
09:08 PM enleth: if you can retract the quill all the way in, it's most likely the lack of tang
09:08 PM ziper: I can't
09:09 PM enleth: brute force through the quill it is then
09:09 PM enleth: and if that doesn't do it, pull the whole tailstock off the lathe and put it on a press
09:09 PM ziper: yeah that seems like a good plan
09:10 PM XXCoder: make it hold something then hammer on what its holding to loosen? would that work?
09:11 PM enleth: that could work with a slide hammer
09:11 PM enleth: even an improvised one
09:11 PM enleth: morse tapers are too narrow for sideways hits to do anything useful
09:11 PM enleth: not sure if "narrow" is the right word here, "steep"? whatever, you get it
09:12 PM enleth: but a slide hammer in the chuck could do it