On Sun, 13 Jun 2004 11:54:35 -0400 (EDT), <
dg140@...>
wrote:
> While drilling Many small holes in PCBS--or any plastic or plexiglass
> for that
> matter--it seems that the bit will become coated with plastics.
> Either it just accumulates, or it can melt on the bit no matter what the
> right speed is. So, how can this be handled? Is there something which
> can be done to have the bit come up clean and not have the accumulation
> or coating interfere with the drilling? I've thought of eleborate
> cooling
> mechanisms combined ith vacuuums to both cool the bit as it eats its way
> through the day, and also suck the debris immediately away. Sounds
> convoluted.
>
> Thanks
> Charles
>
I don't run into that problem with FR4, which material do you use?
I guess compressed air might cool it enough.
st