"geraldthehamster" wrote in message
...
I need to drill accurately some holes for taps in a 40mm thick beech
worktop.

How might I ensure that I am drilling exactly vertically, with my hand-
held drill?

Method A:

Purchase round bubble stick on level.

Place long bar/drill bit in drill chuck

Secure drill in workmate etc with bit down and ensure bit/bar vertical with
normal level

Stick bubble level to top of drill with a large blob of blu-tac and adjust
until level

Use drill, being careful not to disturb level and keep bubble in middle

Method B:

Do it by eye, hole slightly oversize and tighten taps down.


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)