GG’s

Every had a Yankee screwdriver jump out of a slotted screw?  Verily everyone who
has used a Yankee driver has had this happen, usually to the detriment of the
workpiece.

OTOH, a Yankee driver works just great with Roberson or Square-Drive screws.

For wood screw head esthetics, I agree that slotted seems to look best, followed
by Robertson, Allen, Torx, with Frearson and Phillips coming in last.

As far as the best grind for slotted, I think Grace gunsmith style screwdrivers
take the cake.  They have a small parallel-sided grind right at the tip, exactly
matching the geometry of a slot.

Trouble is, I cannot duplicate this grind by hand on a bench grinder!

John Ruth
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