joey81's CNC puzzle

Re: joey81's CNC puzzle

Unread post #231 by timber715 » Sat Jun 17, 2017 8:27 pm

The guide is there and oversized yung pocket right?
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Re: joey81's CNC puzzle

Unread post #232 by joey81 » Sat Jun 17, 2017 8:42 pm

timber715 wrote:The guide is there and oversized yung pocket right?


Yes. Had to make the pocket oversized because the position of the handle's backside with respect to the front bezel is not consistent.
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Re: joey81's CNC puzzle

Unread post #233 by joey81 » Sat Jul 08, 2017 1:47 pm

Clamping square. First prototype
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Three bits died while making this piece.
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Re: joey81's CNC puzzle

Unread post #234 by timber715 » Sat Jul 08, 2017 10:21 pm

joey81 wrote:Clamping square. First prototype
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Three bits died while making this piece.

Have you checked the accuracy of the angle brad?
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Re: joey81's CNC puzzle

Unread post #235 by joey81 » Mon Jul 10, 2017 9:33 am

The gantry has a measured error of 0.03 mm over a distance of 600 mm.

And the error on the outside
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is not consistent with the error on the inside (goes to opposite directions) .
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I don't think this is due to gantry squareness error. I don't now exactly yet what causes it. Probably related to the fact I'm cutting a 19mm thick plate with a 3.175mm diameter bit.

Experimenting with finish cut
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Left: no finish pass
Middle: 0.2mm finish pass 10mm plunge depth. the bit was bouncing off the side of the workpiece
Right: 0.2mm finish pass, 0.75mm plunge depth.

All done with a 3.175mm bit. The bit was flexing so the finished workpiece is wider at its botom that its top. Next time I'll try a bigger diameter bit for the finish pass.
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Re: joey81's CNC puzzle

Unread post #236 by donAD » Wed Jul 12, 2017 11:35 pm

joey81 wrote:First official CNC run
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Hi sir. Pwede kaya to sa grbl?
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Re: joey81's CNC puzzle

Unread post #237 by timber715 » Thu Jul 13, 2017 12:23 am

Joey, those stanley squares are notoriously off, do the line drawing on a straight edge instead...
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Re: joey81's CNC puzzle

Unread post #238 by joey81 » Thu Jul 13, 2017 7:29 am

timber715 wrote:Joey, those stanley squares are notoriously off, do the line drawing on a straight edge instead...


Its a Starret, from Panda :)
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The error is imperceptible using the line drawing method
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Re: joey81's CNC puzzle

Unread post #239 by joey81 » Tue Jul 18, 2017 5:28 pm

donAD wrote:Hi sir. Pwede kaya to sa grbl?


If you mean using a touch plate with grbl, I think pwede.

https://www.reddit.com/r/hobbycnc/comme ... ates_easy/
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Re: joey81's CNC puzzle

Unread post #240 by Violaine » Thu Jul 20, 2017 6:50 am

I also did buy that starret square that is made in brazil. They are accurate enough when compared a staedtler plastic triangle. Even the nearby Kapro (israel) is also ok...pros for the starret is a thicker metal versus the kapro but both have sharp edges needing a deburring tool but i guess the sharp corners also add to the squareness all around. Either you de burr this or leave it as is.
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