16 Jan
2005
16 Jan
'05
9:07 a.m.
One thing you can do is pilot-drill it with a much
smaller drill, and
then run the big drill half-way through, flipping the work over and then
drilling from the other side so the holes meet in the middle. This takes
some accuracy, and a 'jig' on a drill-press, so that the holes line up. As
You can also dril from one side until the point of the drill _just_
appears on the other side, then flip the workpiece over and drill from
that side. I've drilled brittle plastics using a hand drill by doing that.
-tony