In article ,
The Other Mike wrote:
550W correctly reduced in speed via a pulley system and preferably a
steel geared gearbox will mean, at least with a correctly sharpened
drill bit, you'll easily be able to drill 1 inch diameter holes in mild
steel plate. Restraining the item you are drilling could be the bigger
issue.

A 1" twist drill? Crikey. ;-)

--
*Even a blind pig stumbles across an acorn now and again *

Dave Plowman London SW
To e-mail, change noise into sound.