On 23/11/2017 11:01, Dave Plowman (News) wrote:

Only thing I drill at high speeds is PCBs using tungsten drills. But then
my drill press for that is single speed anyway.

I'm really talking about drilling ceramic faceplates (blank flush
wallplates) We make up our own outlets for 'media' use. I think the only
reason I use a fast speed is to compensate for the very light pressure I
use (in terms of the time it takes). I guess light pressure plus slow
speed would be fine but life is short.

Bill