John H. wrote:


I've never done so either. I'm wondering if maybe he was using the small size
bit on the large size screw. I *have* tried that, before I realized there were
two sizes!

But he seems to have his act together, so I didn't suggest that.

Two sizes???
I have 4 different size Robertson screwdrivers.
http://www.waterlooelectronics.com/s...s_special.html
My smallest is size 0 yellow handle
next size 1 green handle
" size 2 red handle usually for # 8 screws
" size 3 black handle " for # 12 screws

http://www.thecanadianencyclopedia.c...es&Params=A219