On Wed, 14 Mar 2012 15:42:31 -0400, Spehro Pefhany
wrote:


Looking at using some relatively small screws tapped into (probably)
6061 aluminum. Through holes, maybe 0.08" of material. Is it insanity
to think about using a cordless hand drill and run them right through
without backing off (assuming a good quality coated tap and aluminum
cutting fluid)?

I took the handle off a tap wrench and then pressed a 3/8 socket on
the end. Then I use a speed wrench for the handle. Holds the tap nice
and square. I can't remeber *ever* breaking a tap with this, haven't
went 0-80 but i wouldn't be afraid to have you try it VBG

Karl