I use a Dremel drill press that has a table that can be elevated up
and down with a knob. That is the way I control the actual drill
penetration. I use reconditioned surplus router bits (box of about
40) from Harbor Freight, I think. Between the elevation table and the
PCB, I place a 4x4 inch by 3/4-inch softwood block. The bit
penetrates the block slightly while drilling through the board. I've
not yet dulled a bit after several hundred holes.
There are much more costly solutions, of course. I find that sliding
the block around from hole to hole with my left hand and elevating the
table knob with my right is a very fast way to drill the board.
Ted Bruce KX4OM
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