gene heskett wrote:
>  
> I would think I can probably do that here Jon, since pcb-gcode uses the 
> engraving bit to spot a starter dimple for the following drill operations.
> When I was off a couple thou, I've seen a #67 drill actually bend and use 
> the marked spot a few times.  At 18 thou, I expect I'd have to drop the Z 
> feed rate from 6 ipm now though.  My spindle is about 100k revs too slow.
Well, due to my VFD only going to 400 Hz, I can't drill above 24,000 
RPM, but that
works fine.  I can't remember what feed I used, but it doesn't take very 
long to poke
through a .062" board, even at slow feeds. 

Jon

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