Posted 8/4/2016 20:58 (#5451312 - in reply to #5451246) Subject: RE: What drill bit for semi truck frame ? (nt)
Canmore Ab. Canada
No WildBuckwheat.
The pilot hole should be about the sixe of the flat part in the bit you wish to finish with.
Going up in small increments is just a way to ruin every bit in the box.
Dan...
What drill bit for semi truck frame ? (nt)
