Homebrew PCBs

>since the black toner gives a better contrast than the
>copper, at least with my lighting.

That's the least IMO. It was cleaning the bit when necessary and 
clearing the dust sufficiently away from the next nearby pad to be 
drilled that got on my nerves. So much so that I devised an air 
solenoid setup to clean the bit and blow away the dust while holes were 
being drilled.

The same foot switch that operated the drill would operate the solenoid 
and a shop Vac. The dust would be blown into a "cowl" attached to the 
Vac. There was the sound of the drill, compressed air and the sound of 
the Vac for each hole drilled...One unholy racket. But it was an 
efficient setup otherwise.

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@...> wrote:
>