13-03-2022, 12:18 PM
I try to use new, unused bits for drilling stainless. A blunt tip is worse than trying to drill with a matchstick IMHO. A light lube such as paraffin or WD40 and I've found that steady fairy heavy pressure on the drill helps. I agree that a pillar drill is almost essential. Once a drill bit has failed it is only fit for the bin as it will have been heated inadvertently and so lost its temper and the S/S will be so hard that you may need a point grinder to finish the hole. (by which time I will have lost my temper as well)