#linuxcnc Logs
Jan 24 2025
#linuxcnc Calendar
12:39 AM lcnc-relay: <phlogtrog@> Hello, new to linux cnc. Please excuse any ignorance. Planning on building a single axis machine with two steppers for sewing (potential expansion to two axis). Planning on using an ethernet mesa card and a spare linux machine (no parallel port). Want to double check the Mesa 7176e would be a logical mesa card choice before i drop and money. (Any general input welcome) thanks for your time :)
12:55 AM lcnc-relay: <phlogtrog@> * cnc, hope this is an okay place to ask.
12:55 AM xxcoder: ignorance is fine, as long as you learn and progress :) we all start ignorant after all
12:55 AM xxcoder: and here is perfectly fine!
12:57 AM lcnc-relay: <phlogtrog@> * 7196S
01:14 AM roycroft: the 7i96s is the most appropriate mesa board for your application
01:28 AM Deejay: moin
01:29 AM lcnc-relay: <phlogtrog@> roycroft: Awesome thank you
01:52 AM lcnc-relay: <meisterdippel@> moin
04:15 AM Tom_L: morning
08:53 AM lcnc-relay: <skunkworks8841@> welp - here we go again..
08:54 AM lcnc-relay: <skunkworks8841@> https://photos.app.goo.gl/JNp4xJZW4ijUbGeL6
08:55 AM bjorkintosh: climate related collisions, skunkworks?
09:09 AM lcnc-relay: <skunkworks8841@> deer
09:10 AM lcnc-relay: <skunkworks8841@> off all the deer I have avoided hitting - I think it was time..
09:18 AM bjorkintosh: expensive dinner.
09:18 AM bjorkintosh: I hope your insurance hurries up and fixes it without being silly about it.
09:36 AM JT-Shop: how in the hell do you lose a hand truck?
09:40 AM bjorkintosh: it's against a wall :-)
09:43 AM Tom_L: hidden in plain sight
10:00 AM lcnc-relay: <skunkworks8841@> Lol.. I keep finding them.. I think I have 3 hand trucks now
10:01 AM lcnc-relay: <skunkworks8841@> Find out if they total it
10:02 AM lcnc-relay: <skunkworks8841@> 2017 with 115k
10:03 AM bjorkintosh: barely broken in!
10:03 AM bjorkintosh: my 240 DLs both died at around 500k
10:03 AM bjorkintosh: you have miles to go.
10:50 AM memleak: i once had an idiot hit me, and for some reason their insurance company paid for the damages instead of claiming it was a total loss because the cost of repairs were more than the KBB value lol, got lucky i guess
10:50 AM memleak: sorry about what happened skunkworks
10:51 AM memleak: my dad's land cruiser is getting there bjorkintosh :)
10:51 AM bjorkintosh: ah. what year, memleak?
10:51 AM memleak: in terms of miles
10:53 AM memleak: 1994
10:53 AM bjorkintosh: those came with a 6 cylinder I believe.
10:53 AM memleak: yeah inline 6, transmission is straight out of a freakin bus. thing is built like a tank
10:54 AM bjorkintosh: yeah. they're essentially tractors.
10:54 AM memleak: xD
02:24 PM lcnc-relay: <JT> Yo
02:25 PM Tom_L: yo yo
02:26 PM Tom_L: get your new tires put on?
02:29 PM lcnc-relay: <JT> Doing it now
02:30 PM bjorkintosh: this is great: http://www.farinhansford.com/gerald/papers/history.pdf
02:30 PM bjorkintosh: background info on the development of CAD.
02:30 PM * bjorkintosh likes history of the things we use.
03:10 PM lcnc-relay: <oddname_skane@> just random question, anyone has a good source for hole sizes etc for thread milling?
03:15 PM Tom_L: yes
03:16 PM Tom_L: https://www.carbidedepot.com/resources
03:17 PM Tom_L: https://www.carbidedepot.com/formulas-tap-standard.htm
03:18 PM Tom_L: https://www.carbidedepot.com/formulas-tap-metric.htm
03:19 PM Tom_L: lots of other good stuff there too
03:23 PM lcnc-relay: <voiditswarranty@> or good ole machinery's handbook. Thread tolerance specs.
03:23 PM Tom_L: or that
03:25 PM Tom_L: i have that in pdf somewhere
03:26 PM lcnc-relay: <oddname_skane@> i tried 5mm hole which is the correct size for M6, but the simulated thread in fusion was non-existing
03:26 PM lcnc-relay: <oddname_skane@> guessings its more a setup-issue from my side though 🙂
03:27 PM Tom_L: drill size is 4.2
03:28 PM Tom_L: major pd is 5mm
03:28 PM Tom_L: acording to the chart i just posted
03:29 PM Tom_L: ... was looking at the wrong row.. sry
03:30 PM Tom_L: 5mm or #8 drill
03:30 PM Tom_L: doesn't say what % of thread
03:31 PM Tom_L: that gets into the thread precision then
03:32 PM Tom_L: https://boltbase.com/blog/metric-thread-tolerances-your-complete-guide/
03:32 PM Tom_L: that lists 6G 6H tolerance chart
03:43 PM lcnc-relay: <voiditswarranty@> also maybe fusion didn't think the thread mill would fit in the hole
03:45 PM Tom_L: i'd blame fustion any chance i could :)
03:45 PM lcnc-relay: <voiditswarranty@> I can't stand it 🙂
03:46 PM lcnc-relay: <voiditswarranty@> I'm happy both solid edge and solid works have maker licenses now
03:46 PM lcnc-relay: <ccatlett1984@> Did you tick the "modeled" box, in the hole feature, after selecting the thread type?
03:47 PM lcnc-relay: <ccatlett1984@> oddname_skane@
03:48 PM Tom_L: fwiw, i wrote a thredmill op for flexgui
03:50 PM Tom_L: didn't do a metric version
03:54 PM lcnc-relay: <oddname_skane@> ccatlett1984@: doesnt matter since its for manufacturing? 🙂
03:54 PM lcnc-relay: <oddname_skane@> its just a 5mm hole
03:54 PM lcnc-relay: <oddname_skane@> when I want to make a 1mm pitch thread in matching M6
03:55 PM lcnc-relay: <oddname_skane@> but come to think about it, there must be a setting telling its its for M6 in there
03:55 PM lcnc-relay: <oddname_skane@> otherwise it will just lick the face...
03:55 PM lcnc-relay: <zincboy_ca_on@> You have to select the model thread check box if you want anything other than just the tap size hole
03:56 PM lcnc-relay: <ccatlett1984@> zincboy_ca_on@: I learned that the hard way a few weeks ago 😄
03:57 PM lcnc-relay: <zincboy_ca_on@> I always have to check as I have it on for 3d printed things and off for machining.
03:57 PM lcnc-relay: <oddname_skane@> so I really need the thread modeled for manufacturing?
03:58 PM lcnc-relay: <zincboy_ca_on@> If you want it to be represented in the 3d model. I don't use that for machining though as you just want the tap drill size modeled.
03:58 PM lcnc-relay: <oddname_skane@> well then I just need to figure out how to make the tool cut deep enough 🙂
03:58 PM lcnc-relay: <zincboy_ca_on@> Is this a CAM issue?
03:59 PM lcnc-relay: <oddname_skane@> not sure yet....
03:59 PM lcnc-relay: <oddname_skane@> but I think I need to tell it tits M6 somehow so ill make it so in the model
04:00 PM lcnc-relay: <zincboy_ca_on@> You do that when you use the hole tool. Select threaded hole and then the thread type and size.
04:00 PM Tom_L: does fustion render the threads if you do that?
04:00 PM Tom_L: it would certainly slow it down
04:00 PM Tom_L: catia doesn't
04:01 PM lcnc-relay: <zincboy_ca_on@> Only if you select model threads. Don't do that for machining. Only for 3d printing where you want to print the threads.
04:02 PM lcnc-relay: <zincboy_ca_on@> oddname_skane@ are you using a single point thread mill? I have had to adjust those as the flat on the point is usually too sharp and gives too shallow a cut.
04:02 PM lcnc-relay: <oddname_skane@> its like 1x pitch one yes, guessing its single point then?
04:02 PM lcnc-relay: <oddname_skane@> so it has to spiral up the whole length
04:03 PM Tom_L: it's not single point then
04:03 PM Tom_L: http://tom-itx.no-ip.biz:443/~webpage/cnc/thread_mills/Thread_mill2.jpg
04:03 PM Tom_L: those are single point
04:04 PM lcnc-relay: <oddname_skane@> one of those yes
04:04 PM Tom_L: if it looks like a tap then it's not
04:04 PM lcnc-relay: <oddname_skane@> 1x pitch 🙂
04:04 PM lcnc-relay: <oddname_skane@> never used em, dont know the lingo yet 😄
04:04 PM lcnc-relay: <zincboy_ca_on@> Yes, then the flat on the point of the vee is too sharp in order to cover a range of thread sizes.
04:04 PM Tom_L: on the other type you basicaly run a single helix or so
04:04 PM Tom_L: for production it's alot quicker
04:05 PM Tom_L: single point are more versatile
04:05 PM lcnc-relay: <zincboy_ca_on@> You need to compensate for that by increasing the cut diameter.
04:05 PM lcnc-relay: <oddname_skane@> yeah I was thinking it was a bit iffy
04:05 PM lcnc-relay: <oddname_skane@> it is 4.8mm
04:06 PM lcnc-relay: <oddname_skane@> what should I try?
04:06 PM lcnc-relay: <zincboy_ca_on@> https://www.nyccnc.com/NYC%20Uploads/Thread-Mill-Calculator-Rev8.xlsx
04:07 PM lcnc-relay: <oddname_skane@> ahh just tried for fun now it is starting to look better
04:08 PM lcnc-relay: <oddname_skane@> is there metric one of those? it was awesome !
04:08 PM Tom_L: zinc did you write that/
04:08 PM Tom_L: ?
04:08 PM Tom_L: looks nice
04:09 PM lcnc-relay: <zincboy_ca_on@> No, I can't take credit for that.
04:10 PM lcnc-relay: <zincboy_ca_on@> Someone on here pointed it out and I have been using it ever since. For metric threads, I just convert back and forth.
04:11 PM Tom_L: aparently i'd already saved that...
04:27 PM lcnc-relay: <oddname_skane@> ill just try my way to the best thread 😄
04:32 PM lcnc-relay: <oddname_skane@> its fun machining anyway 🙂
04:32 PM lcnc-relay: <zincboy_ca_on@> A go/no-go gauge is really handy when threadmilling
04:33 PM Tom_L: yeah, maybe not so practical for a hobbyist
04:33 PM lcnc-relay: <zincboy_ca_on@> Cheap on amazon for a pretty practical set. Wouldn't trust them too far but better than a random bolt 🙂
04:34 PM Tom_L: i had my friend make me a plug with a thread mic for this oddball thread: http://tom-itx.no-ip.biz:443/~webpage/rue/extinguisher_nut/Pressure_test_cap8.jpg
04:35 PM Tom_L: fire extinguisher pressure test cap
04:35 PM lcnc-relay: <zincboy_ca_on@> Yes, if you have a lathe you can make your own go/no-go gauges. I usually cut a plug like that for oddball threads.
04:35 PM lcnc-relay: <oddname_skane@> I have like 2 threadcutters so far, 2 go/nogo gauges isnt that pricey 🙂
04:36 PM lcnc-relay: <zincboy_ca_on@> The single point threadmills can cut a pretty big range of threads.
04:36 PM Tom_L: i figured with the ones i got, i could cut any thread i may ever need
04:37 PM Tom_L: except one my bud made for me that was 3tpi
04:37 PM lcnc-relay: <zincboy_ca_on@> I got a similar set as you Tom_L and so far haven't needed anything else. Now watch as next week someone asks me for an acme thread or something...
04:37 PM Tom_L: http://tom-itx.no-ip.biz:443/~webpage/temp/thread1.jpg
04:38 PM Tom_L: getting down to the root, the lathe was starting to complain a bit
04:38 PM lcnc-relay: <oddname_skane@> zincboy_ca_on@: yeah that is a good point
04:38 PM Tom_L: you can only go just so slow
04:38 PM lcnc-relay: <oddname_skane@> ill make a metric sheet of that excel 😄
04:38 PM lcnc-relay: <oddname_skane@> pretty handy with excel so shouldnt be hard
04:39 PM Tom_L: andy made an acme 'tap'
04:39 PM lcnc-relay: <zincboy_ca_on@> Still use taps for M2 and smaller threads. Just did a bunch of M1 in copper.
04:39 PM lcnc-relay: <oddname_skane@> im gonna wreck mine with my mini mill I reckon 😄
04:39 PM Tom_L: less apt to break a threadmill even with small threads
04:39 PM Tom_L: over a tap
04:40 PM Tom_L: i bet the copper was fun
04:40 PM lcnc-relay: <oddname_skane@> well thanks for the help guys, now my bed is calling, catcha ya later
04:40 PM lcnc-relay: <oddname_skane@> * catch
04:41 PM lcnc-relay: <zincboy_ca_on@> Forming taps are the lifesaver for the really small stuff. It is more that the forming taps are so much cheaper than an appropriate threadmill for M1.
04:41 PM Tom_L: i never had to cut threads for production
04:42 PM Tom_L: most airplane parts are rivited :)
04:43 PM lcnc-relay: <skunkworks8841@> well - I just got a text from amfam saying that they consider the car total loss..
04:43 PM Tom_L: skunkworks, is that good or bad?
04:43 PM Tom_L: what's the buyout cost?
04:44 PM lcnc-relay: <skunkworks8841@> ugh - I don't know. I was hoping that I wouldn't have to fix it.
04:44 PM Tom_L: or do you feel up to another rebuild...
04:44 PM lcnc-relay: <skunkworks8841@> I don't know - Probably won't know until next week
04:45 PM Tom_L: at least the used car market has settled down a bit which may help you
04:46 PM Tom_L: alot of the lots around here were completely empty and that's starting to change
04:48 PM xxcoder: what happened to your car skunkworks?
04:48 PM Tom_L: it and a deer decided to occupy the same space
04:48 PM andypugh: Your threadmill won’t do Whitworth either (55 degree angle) or PG (80 degree thread angle)
04:48 PM xxcoder: oh boy
04:49 PM Tom_L: andy, correct but who really uses those?
04:49 PM Tom_L: :)
04:49 PM andypugh: Whitworth is the ISO standard for pipe threads. So pipe fiittings everywhere in the world except the US.
04:52 PM lcnc-relay: <skunkworks8841@> when I fixed the car the first time - it was worth 12 to 15k now it is probably worth around 6k
04:52 PM lcnc-relay: <skunkworks8841@> or a little more
06:40 PM lcnc-relay: <captainhindsight_.@> https://linuxgizmos.com/cubie-a5e-with-4k-video-support-and-m-2-nvme-ssd-now-available-for-preorder/
06:40 PM lcnc-relay: <captainhindsight_.@> Cubie A5E is priced at $30 for the 4GB variant
06:41 PM lcnc-relay: <captainhindsight_.@> 2x Gigabit Ethernet Ports
06:43 PM lcnc-relay: <captainhindsight_.@> 0.5 x the price of the rpi5 with 4GB RAM
06:45 PM lcnc-relay: <captainhindsight_.@> the 1GB RAM version is only $15
06:55 PM lcnc-relay: <captainhindsight_.@> skunkworks8841@ sorry to hear, didn't you just rebuild that car last year?
07:10 PM lcnc-relay: <skunkworks8841@> It has been a few years now
07:11 PM lcnc-relay: <captainhindsight_.@> heh the last few years have been a blur
07:12 PM lcnc-relay: <captainhindsight_.@> 2018 was 2 years ago and the 90's were ~10 years ago
07:13 PM lcnc-relay: <skunkworks8841@> I had it back on the road 05/22
07:14 PM lcnc-relay: <skunkworks8841@> So - it really has been a good car. I might just fix it.
07:14 PM lcnc-relay: <skunkworks8841@> Yah.. time flies
07:15 PM lcnc-relay: <captainhindsight_.@> I know the feeling, i spent a year or two rebuilding my sons car only to have it hit by an idiot before I finished the paint
07:17 PM lcnc-relay: <skunkworks8841@> No lights on the dash and nothing leaking...
07:29 PM memleak: Mali-G57, nice, supported by panfrost
07:29 PM memleak: skunkworks what kind of car is it?
07:37 PM lcnc-relay: <skunkworks8841@> 2017 jetta
07:40 PM memleak: oh nice! i had a 99 passat
07:40 PM memleak: timing belt slipped, piston met valve
07:40 PM memleak: dink dink dink
07:41 PM memleak: how bad is the damage? i saw the pic, is the radiator and everything ok?
07:43 PM memleak: i think they make radiators on jaguars out of tinfoil
07:44 PM memleak: i actually prefer the Cubie A5E because it has a built-in M.2 slot, no need for a PCI E adapter board
07:47 PM memleak: just wish it had more memory, the pi4 has 16GB of RAM now
07:47 PM memleak: i vote for an ARM64 board with M.2 and DDR5 DIMM slots
07:48 PM bjorkintosh: It seems there was a point in time when German cars were fantastic.
07:48 PM bjorkintosh: and then that all ended, and they're basically now as useful as jaguars.
07:48 PM memleak: IMO the 911 GT3 RS is one of the best cars ever made, even has a roll-cage.
07:49 PM bjorkintosh: it's for fancy folk. I'm talking about every day vehicles for grocery shopping and whatnot.
07:49 PM memleak: ah
07:49 PM bjorkintosh: volvo 240 dl had a roll cage too.
07:50 PM roycroft: some german cars still are fantastic
07:50 PM bjorkintosh: which?
07:50 PM bjorkintosh: I must only have encountered the mediocre ones
07:51 PM bjorkintosh: from mercedes to audi to bmw and vw.
07:51 PM bjorkintosh: never drove a porsche so that I don't know.
07:51 PM roycroft: some are more like trabants
07:51 PM roycroft: there are some very good cars made by daimler-benz and porsche
07:52 PM bjorkintosh: those are in the rare/collectors category though.
07:52 PM bjorkintosh: ie, trabant
07:52 PM roycroft: yes, they are a curiosity that somehow makes them collectable
07:52 PM roycroft: trabant was the east german equivalent of yugo
07:53 PM roycroft: they were actually somewhat better than yugos, as they at least had air-cooled vw engines in them
07:53 PM bjorkintosh: if I ever have the money to collect vehicles, I'd find a few Citroens.
07:54 PM bjorkintosh: the DS and the SM especially.
07:54 PM roycroft: your taste in vehicles is eclectic
07:55 PM roycroft: my smart thermostat arrived today, and installation went fairly smoothly
07:55 PM roycroft: i should save a fair amount on my power bill by not keeping the house warm at night while i'm sleeping
07:55 PM roycroft: i'll have to remember to put an extra blanket on the bed tonight
07:56 PM roycroft: and my cats will have to figure out what they want to do
08:02 PM bjorkintosh: unfortunately french cars are not a top gear favorite https://www.youtube.com/watch?v=uuw9XWNRNgw
08:03 PM bjorkintosh: incidentally, Bezier (of the curve fame) was one of the pioneers of CNC in france, as well as CAD design for automobiles.
08:04 PM bjorkintosh: I think he worked for Renault or Peugeot. can't remember now. he even wrote a book on CNC programming but it was quite mathematical.
08:07 PM bjorkintosh: https://www.youtube.com/watch?v=VxaDgf9SHic
08:44 PM rifraf: 4 jaw self centering chuck verses normal 3 jaw? https://www.machineryhouse.com.au/c722
08:45 PM lcnc-relay: <zincboy_ca_on@> Are you working with square stock? If so then get the 4 jaw but otherwise the 3 jaw all day.
08:45 PM rifraf: worth extra 50$ ya think on the AU$ cost of 3 jaw version
08:46 PM rifraf: only round and hex stock
08:46 PM lcnc-relay: <zincboy_ca_on@> Can't do hex stock with a 4 jaw.
08:47 PM rifraf: true
08:47 PM rifraf: but would it center round bar better than a 3 jaw?
08:47 PM lcnc-relay: <zincboy_ca_on@> There no value in a self centering 4 jaw except if you are working with square material.
08:48 PM rifraf: k
08:48 PM lcnc-relay: <zincboy_ca_on@> It will not center round bar better. In fact it is almost gauranteed to be worse unless the stock is perfectly round.
08:49 PM lcnc-relay: <zincboy_ca_on@> I use an _independent_ 4 jaw most of the time.
08:49 PM rifraf: yep thanks, have scrubbed it from my cart, no need i see
08:49 PM rifraf: yep i have the normal 4 jaw for independance when required
09:12 PM Unterhaus__ is now known as unterhausen
09:20 PM lcnc-relay: <schoch_@> 4 jaw holds a bit better than a 3 jaw, also good for square stock.
09:21 PM lcnc-relay: <schoch_@> my lathe shipped with a 3 and 4 jaw chuck, little did I know they were both scroll chucks. turns out I really like the 4 jaw.
09:22 PM roycroft: a six jaw self-centering chuck is usually more concentric than a 3-jaw, but the chief advantage is that it holds parts better than a 3-jaw without having to tighten the jaws down so hard they mar the part
09:22 PM roycroft: but all self-centering chucks will be problematic for any work that cannot be done with a single set up