On Feb 12, 9:38*pm, finiteguy wrote:
I have an old house with glass door knobs. The bathroom knob no longer
works properly. I bought a new replacement and when I removed the old
knob, I noticed that the bore in the door is way too small for the new
knob assembly. Should I get out a hole saw and cut a new hole? Looks
like I can really screw this up if I'm not careful.

Bore a better hole, but clamp a board on the door and start your
drilling through that to keep it from wandering off where it doesn't
belong. Two boards, one on each side would be best so there won't be a
splintery breakthrough. Measure carefully, and mark well before you
start. God luck.

Joe