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General Mach Discussion / Re: cnc for milling out a circuit board
« on: April 30, 2011, 01:30:49 AM »
I see your problem now.
The ball bit is really not the best tool, an engraving bit with a small flat on the bottom is what you should be using. Although it would be possible to redo the toolpath with a smaller stepover, the GCode would take forever to complete and would probably still leave some copper where it is not required.
My best suggestion is that you obtain some engraving points similar to these http://cgi.ebay.co.uk/5x-Carbide-PCB-Engraving-Bits-CNC-Router-Tool-30D-0-2mm-/260776680711?pt=UK_Home_Garden_PowerTools_SM&hash=item3cb7805d07#ht_2420wt_1139 they cost very little and will make a good job.
Tweakie.
The ball bit is really not the best tool, an engraving bit with a small flat on the bottom is what you should be using. Although it would be possible to redo the toolpath with a smaller stepover, the GCode would take forever to complete and would probably still leave some copper where it is not required.
My best suggestion is that you obtain some engraving points similar to these http://cgi.ebay.co.uk/5x-Carbide-PCB-Engraving-Bits-CNC-Router-Tool-30D-0-2mm-/260776680711?pt=UK_Home_Garden_PowerTools_SM&hash=item3cb7805d07#ht_2420wt_1139 they cost very little and will make a good job.
Tweakie.