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Post by Big Man Black T-Shirt(Patrick) on Feb 17, 2018 5:56:29 GMT
For two days I've been pulling my hair out trying to figure out why my previously beautiful pocket for a USB connector PCB had started looking like complete garbage. It went to being about 1mm wider and longer than it had been, and two 3mm islands I was leaving in the middle, once perfectly round and pretty, were now ugly, clumpy looking islands about 1.5mm across.
WTF?!?!!?
Then, just now, after 2 days of testing and changing every parameter you can imagine in F360, I realized that I was using a 1.6mm endmill but I was telling F360 that I was using a 0.8mm endmill.
I haven't tested it yet to see if that was, indeed, the issue, but I'm betting it is, don't you think?
Anyway, thought I'd share a story of being my own worst enemy.
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Post by kevin on Feb 17, 2018 11:42:48 GMT
I am pretty sure you are right about what the problem was, but don't feel bad, we've all had them.
Actually I think you posting your moron moment is genius because it could keep someone else from having the same one you've had. If we all post our favorite, (or maybe I should say least favorite) moron moments we could collectively avoid what are probably some pretty common mistakes that are usually things we know better than to do, but in our haste to make some chips we miss the obvious.
Here's one of my moron moments: Giving a G20 command to run a file created in Metric increments, and (yes in true moron moment fashion, I've done it both ways), and given a G21 command to run a file created in Imperial increments.
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Post by ahahlberg on Feb 20, 2018 7:16:43 GMT
As long as we're talking moron moments, I had one of my own - brand new Carve King I finished building, then spent three days learning F360 and building my first part program in F360 - simple geometrics to test for orthogonality and precision - and - followed the instructions too literally about changing the G54 command to a G0 Z10 in the gcode file and didn't do the metric conversion since, for the time being, I like to work in inches - drove a nice 1/4" hole through my workpiece, the spoil board, and into the bed! Seems you can tell it to go 10" up - but it can't get there but assumes it did, so when you go to ramp in your first cut it tries to go down 10" - was doing a nice ramping cut and burning my workpiece while I leaped to shut it all down. Actually did it twice - before I asked for help and got reminded of metric vs inches, G20 vs G21. Oh well - nothing a little epoxy won't fix! Machine still worked fine after that little fiasco - but I think it's laughing at me behind my back! Had to clean my milling bit and clean the collet of the router to get the burned remains out of the flutes!
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Post by Bruce on Feb 21, 2018 2:53:30 GMT
To check the G-code as a sanity check, I use CAMotics, camotics.org/download.html . Then look for the tool path and the dimensions of the work area XYZ to make sure nothing funky is going on. It will check if your running in mm or inch also.
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Post by Big Man Black T-Shirt(Patrick) on Feb 22, 2018 1:34:54 GMT
I use CAMotics also. Although I wish there was another app that has better graft, something akin to the Simulator in F360 except in a stand alone app.
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Post by Big Man Black T-Shirt(Patrick) on Feb 22, 2018 1:35:50 GMT
Also, berogers, I've been meaning to ask, what the hell is that thing in your profile photo? I keep thinking it's a cross between a fishing reel and a snare drum.
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Post by Bruce on Feb 22, 2018 1:57:03 GMT
HAHA! Your second guess is very close. It is the 8" tom of the custom drum set I built. Check them out here > DIY Drums |
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