#linuxcnc | Logs for 2019-04-27
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[00:10:22] Tom_itx is now known as Tom_L
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[04:13:23] <Loetmichel> Hmmm... just got a bathroom scales delivered delivered (wire is redecorating the bathroom in all Bamboo clad). Now we have three. And so much for calibration... new one shows 121.5kg when i step in, the two older ones 120.9kg and 117.4kg :-(
[04:58:53] <SpeedEvil> There is probably a way to calibrate.
[04:59:05] <SpeedEvil> hold down a button on boot, and put on a 100kg scale.
[04:59:11] <SpeedEvil> err 100kg weight
[04:59:17] <SpeedEvil> or 10kg weight, or ...
[04:59:50] <XXCoder> mine does on startup each time. uses itself to set zero. but no way to do specific weight calibration
[05:00:54] <Loetmichel> SpeedEvil: those cheap things HAVE no buttons
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[05:03:18] <SpeedEvil> I've found a hidden button on the two I dissasembled.
[05:04:20] <SpeedEvil> Also you can hack a small offset on the autozero ones by leaving a small weight on it, stepping on it, then kicking the weight off.
[05:04:53] <XXCoder> do it have to be specific weight?
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[05:06:53] <andypugh> Loetmichel: Well, 1% error isn’t that bad. And they all agree that you are a fatty :-)
[05:07:16] <andypugh> pink_vampire: What does that cap do?
[05:07:17] <Loetmichel> andypugh: so what`
[05:07:19] <Loetmichel> ?
[05:07:33] <XXCoder> mny cheap digital scales cheat by retaining last weight if its small enough difference
[05:07:43] <XXCoder> makes it seem repeatable. its not really
[05:08:31] <andypugh> Well, I was thinking about what the function of bathroom scales is. And they all appear to be accurate enough for their intended purpose.
[05:08:55] <pink_vampire> andypugh: it is push the taper out
[05:09:20] <andypugh> MT3 spindle?
[05:09:28] <pink_vampire> mt2
[05:10:06] <andypugh> Normally there is a drawbar to pull the tools in
[05:10:07] <pink_vampire> I need to get some collets for it and also make a drawbar
[05:10:36] <pink_vampire> andypugh: but if you are using an arbor you need to push it out some how
[05:11:56] <andypugh> https://www.amazon.com
[05:15:46] <andypugh> pink_vampire: How about a Glock part :-) https://www.amazon.com
[05:16:04] <andypugh> Thoigh check, that might be left hand thread.
[05:16:12] <XXCoder> might have no cap at end heh
[05:16:16] <XXCoder> oh it doesnt ;)
[05:16:32] <pink_vampire> it is need to be close in one end
[05:16:46] <andypugh> So TIG weld a cap on?
[05:17:27] <pink_vampire> andypugh: thanks, i just need a reason to get a tig welder
[05:17:32] <andypugh> I honestly don’t think you need that part.
[05:18:14] <andypugh> I always extracted my MY tooling by tapping the top of the drawbar with a hammer.
[05:18:22] <andypugh> (MT tooling, that is)
[05:18:32] <syyl> same here
[05:18:44] <syyl> people are concerned about breaking the spindle bearings that way ;)
[05:18:54] <pink_vampire> but some of them dont have threads
[05:19:13] <syyl> the tools?
[05:19:43] <pink_vampire> yes
[05:19:58] <syyl> in those cases i just pull the drawbar out
[05:22:00] <andypugh> I am not sure I would ever trust a milling cutter to stay in place without a drawbar. Drilling, yes, because that is what MT was designed for. But side load without end load seems like it could work loose.
[05:22:14] <syyl> it can for sure :D
[05:22:20] <syyl> same for boring heads
[05:22:33] <syyl> my wohlhaupter came with a tang instead of a drawbar thread
[05:23:05] <pink_vampire> https://i.imgur.com
[05:23:27] <syyl> if the chuck is only intended to be used on the mill
[05:23:31] <syyl> get another arbor for it
[05:23:37] <pink_vampire> for something like that you dont want to hammer on the bearings
[05:24:00] <XXCoder> pink_vampire: did you ever find right cap for your machine?
[05:24:05] <syyl> no worries
[05:24:19] <syyl> most people tend to overtighten morsetaper tooling
[05:24:49] <pink_vampire> first hole you drill make it so tight
[05:25:25] <pink_vampire> now i just need the cap https://i.imgur.com
[05:25:47] <andypugh> syyl: Do you need an official Wohlhaupter MT2 shank with drawbar?
[05:26:03] <syyl> ha! the tang on my upa was un-screwable ;)
[05:26:05] <XXCoder> did you find the capactor? 330v 40uF if I recall right?
[05:26:12] <syyl> which i didnt realise at the time
[05:26:22] <pink_vampire> i order one
[05:26:32] <pink_vampire> and i took the motor apart
[05:27:00] <pink_vampire> https://i.imgur.com
[05:27:19] <pink_vampire> how to save a nut
[05:27:30] <andypugh> syyl: https://photos.app.goo.gl
[05:28:24] <XXCoder> thats cool :)
[05:28:42] <XXCoder> anyone here ever used a ultrasonic to clean shirt or something with stains?
[05:28:58] <XXCoder> i have couple nice shirts I want save from deburring stain
[05:29:28] <andypugh> Here’s a funny thing. Google Photos sorts out albums of “people” based on face recognition. I have thousands of photos and Google has only found 8 people in any of them. And one of them is the girl in the magazine under my boring head.
[05:29:52] <XXCoder> lol
[05:29:58] <pink_vampire> LOLL
[05:33:38] <andypugh> pink_vampire: https://www.amazon.com
[05:34:00] <pink_vampire> Price: $23.80 + $14.25 shipping
[05:34:02] <andypugh> Do you have a lathe?
[05:34:20] <pink_vampire> the milling head is for my lathe
[05:34:36] <pink_vampire> i need a bench top grinder
[05:34:38] <syyl> thats a screw-tang too :D
[05:35:21] <andypugh> OK, so then you should buy the internal threading bar, because you will need it in the future too.
[05:35:41] <pink_vampire> and a tool post..
[05:35:49] <andypugh> Have you done threading?
[05:36:00] <pink_vampire> mmm
[05:36:25] <andypugh> An internal thread into a blind hole with a pitch not native to the lathe is definitely the most interesting place to start :-)
[05:36:56] <pink_vampire> yeah
[05:37:08] <pink_vampire> I'm not sure i have metric gears
[05:37:12] <pink_vampire> but lets see
[05:37:58] <andypugh> You need a 127 tooth. But then you can’t disengage the half-nut, you need to leave it engaged and reverse the motor to retract.
[05:38:05] <syyl> you have to start somewhere, andypugh ;)
[05:40:26] <andypugh> Today I will mainly be giving up on: https://photos.app.goo.gl and trying a completely different design. Which is annoying as I have many hours of work in the first one.
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[05:40:59] <andypugh> (and it looks so nice too. Pity it’s too weak to work)
[05:41:02] <XXCoder> yeah some ideas need work to work
[05:42:42] <pink_vampire> there is no way to make metric thread
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[05:43:02] <andypugh> pink_vampire: You don’t have a 127 tooth gear?
[05:43:22] <andypugh> (Just because the thread isn’t on the table doesn’t mean you can’t make it)
[05:43:25] <XXCoder> if not, might be able to make one on your mill
[05:43:52] * SpeedEvil ponders a series of differentials to add up to 127.
[05:44:15] <andypugh> A CNC conversion will solve al these problems.
[05:44:25] <SpeedEvil> And add exciting new ones!
[05:44:38] <pink_vampire> the largest gear is 80
[05:45:08] <SpeedEvil> https://i.imgur.com related.
[05:45:24] <andypugh> Is there a 63.5 tooth gear? :-)
[05:46:14] <pink_vampire> how?
[05:47:10] <pink_vampire> https://i.imgur.com
[05:50:11] <andypugh> Is that your lathe?
[05:50:16] <pink_vampire> correct
[05:50:34] <andypugh> Do you have those gears?
[05:50:40] <pink_vampire> yes
[05:50:56] <andypugh> So, what makes you think you can’t make a metric thread?
[05:51:32] <andypugh> (What I said about not disengaging the half-nut still applies)
[05:52:04] <andypugh> Also, you can cut the thread using an M6x1 tap held in the toolpost as the tool.
[05:52:06] <pink_vampire> what gear combination make 1mm pitch?
[05:52:30] <andypugh> 40-50-55/65-75
[05:54:06] <pink_vampire> i never change gears on the lathe, now it is with the default for the finish cut
[05:54:48] <jthornton> morning
[05:54:54] <XXCoder> yo
[05:55:38] <pink_vampire> yes!! i have mm option!
[05:58:06] <XXCoder> nice
[05:59:16] <pink_vampire> everything greased like crazy
[06:02:09] <andypugh> pink_vampire: Too much detail! (or do you mean the milling machine?)
[06:12:09] <pink_vampire> no, the lathe
[06:12:22] <pink_vampire> i greased everything
[06:35:14] <pink_vampire> i have missing gear
[06:35:19] <pink_vampire> 40
[06:39:00] <Tom_L> morning
[06:39:30] <XXCoder> hey
[06:40:08] <pink_vampire> how do i find out what type of gear is that
[06:40:16] <pink_vampire> so i can print one
[06:52:46] <XXCoder> no idea
[06:54:20] <pink_vampire> https://groups.google.com!topic/rec.crafts.metalworking/1-Ijf_y3sAQ
[06:54:34] <pink_vampire> i'm trying to identify the gear type
[06:55:30] <Tom_L> andypugh, 6 hydraulic cylinders for the new design :)
[06:58:13] <Tom_L> or was the center the weak part...
[06:58:33] <XXCoder> center. you can see broken part there
[07:31:59] <andypugh> pink_vampire: Can you measure the diameter and number of teeth of one of the gears you do have?
[07:32:31] <andypugh> (I have a spreadheet that I can use to work out what gear type you have)
[07:32:50] <pink_vampire> i think it is metric 1 module
[07:33:20] <andypugh> But what pressure angle?
[07:33:47] <pink_vampire> 20
[07:34:12] <andypugh> OK, you know that?
[07:34:19] <pink_vampire> i hope
[07:34:36] <andypugh> I can confirm it, from a measurement
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[07:35:04] <andypugh> If you measure another gear
[07:35:21] <pink_vampire> with the help of solidworks and the vinyl cutter, i'm making some templates
[07:35:44] <andypugh> It almost certainly will be 20
[07:36:03] <andypugh> Which gear do you have loose?
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[07:36:24] <pink_vampire> 40
[07:36:28] <andypugh> OK
[07:36:54] <andypugh> If you take a caliper and measure the span over 5 teeth what do you get?
[07:38:09] <pink_vampire> on 45 gear i'm getting 13.79
[07:38:35] <andypugh> On 45 you need to measure over 6 teeth
[07:39:13] <pink_vampire> 16.69
[07:39:32] <andypugh> Page T-87 here https://sdp-si.com
[07:40:33] <pink_vampire> lol
[07:40:38] <andypugh> Sounds like a 20 PA then.
[07:41:13] <andypugh> (I have those calculations in a public spreadsheet here: https://docs.google.com )
[07:42:00] <andypugh> 20 PA should be 16.867 over 6 teeth. 14PA would be 10.886 over 4 teeth
[07:42:15] <pink_vampire> i just took a gear from the toolbox
[07:43:03] <andypugh> To be honest, for a lathe change gear the differenc between 14 and 20 PA isn’t critical, and 14 PA is pretty old-fashioned.
[07:43:26] <andypugh> So I would just get on with printing at 1MOD and 20PA
[07:43:54] <pink_vampire> this is what i'm trying to do
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[08:10:06] <HexaCube> hey there, is there some "preferred" program which lets me write Gcode by hand and 'simulate' the milling process?
[08:10:10] <HexaCube> does such a thing exist even? :P
[08:10:27] <pink_vampire> mdi
[08:11:54] <HexaCube> I'd like to learn writing gcode at home where I don't have a mill, so seeing what a machine would do would be nice
[08:13:09] <pink_vampire> there is simulation in linux cnc
[08:13:25] <pink_vampire> and youcan use in in vbox
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[08:24:45] <net|> cnc-qt does simulation too iirc
[08:26:33] <net|> it has 3d maybe not sim mode
[08:27:48] <net|> there are a few gcode simulators but the tooling options are limited
[08:28:21] <net|> hard to get the full simulation
[08:29:21] <net|> would be nice to have a 3d metal lathe simulation
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[09:10:47] <Loetmichel> hehe, i just came back from the local home improvement shop... i LIKE it that my wife stays at the "sale isle" longer than me and buys more stuff... she bought some garden tools, a rain drum pump, some hoses and nozzles, a roll of duct tape... and bought ME a new battery drill and an electric jigsaw to build her new balkony flower racks... I KNEW why i married her 19 years ago ;)
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[11:23:40] <Elmo40> she bought you tools to make her something? i like that.
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[11:48:54] <_unreal_> What a pain in the ass that was..
[11:49:41] <_unreal_> I just finished soldering together my perfboard motor interface boards. each little board has the conversions to plug the wire runs into the motors JST connectors
[11:50:59] <_unreal_> 11:50am guess its time to make some coffee and have a bagel
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[12:56:55] <_unreal_> now I feel foolish just relised that I didnt fully finish solering my controller motor interface adapters. I missed adding a header. no biggie just need to tack 4
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[13:03:16] <jdh> build a cnc solderer. no mistakes
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[13:07:19] <fragalot> 'sup
[13:07:59] <_unreal_> DONE....
[13:08:43] <_unreal_> now when I get the chance I'm going to cut the 2 boards I made in half so I have my 4 individual interface adapters
[13:09:31] <_unreal_> fragalot, not much
[13:12:06] <_unreal_> jdh, a cnc solder wont help me when I forget to make something part of the process
[13:15:01] <gambakufu> build and AI.
[13:22:54] <fragalot> just drown it in flux & shove it in the oven on the pyrolysis setting
[13:22:58] <fragalot> :D
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[13:38:29] <Loetmichel> hmm, does lighting start hailstorms? just had a HUUUGE flash and immediate thunder here... seconds later hail started. Fierce and long enough that the ground was covered in white for a few minutes after until it melted. (Its 16°C outside here according to my outside thermometer.)
[13:44:19] <CaptHindsight> we have snow here today, was 25C 2 days ago
[13:44:46] <CaptHindsight> expecting 12-20cm by Sunday am
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[14:25:07] <_unreal_> hello trying to figure this out? https://github.com
[14:26:08] <fdarling> _unreal_: yo
[14:27:57] <_unreal_> hi
[14:28:57] <_unreal_> I just finished soldering my motor/end stop boards
[14:29:45] <_unreal_> when I get them all cut in half I'll have my working interfaces. I could "could" rig up one of the motor controlls to do a test running
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[14:51:12] <andypugh> I had all sorts of plans for today, then my Mac died horribly in the middle of doing my CAD design.
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[14:51:38] <andypugh> So tomorrow I will mainly be taking it to Apple for them to confirm that it has actually died
[14:51:49] <andypugh> It’s only 8 years old!
[14:54:14] <andypugh> pink_vampire: Finished the threaded part yet?
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