To mount a pull on a drawer front I drilled the two holes, then realized
that the material thickness was slightly greater than the length of the
machine screw, so a counter bore was required. Didn't want to attempt
to temporarily plug the hole, so first drilled a hole through some
scrap, clamped that to the inside and used it as a guide.
For the remaining drawers I didn't bother with the guide, but instead
first drilled a pilot hole, counterbored the inside, then drilled out
the pilot hole to the finished size. This was all done freehand with an
electric hand drill. While drilling out the pilot hole I wondered
whether the bit would track (I was using brad point bits). Apparently
they did. Is that common or did I just get lucky?
Presumably it's well known, but a neat trick I came up with to avoid
splintering out the backside of the drawer front when drilling the
original hole is to put scrap behind it and then wedging it against
the front using a stick slightly longer than the distance to the back
of the drawer. It's quicker than clamping and can be done with the
drawer in the cabinet.