Evolution of screwdrivers question (longish)
Angelo in Cornwall, NY
>Hi again. I picked up this stanley changable bit screwdriver they other day. Its a No. 88. Can't find any info on the web. Anyway, it holds the bits in place by a taper with one side ground off, kinda like a modified morse taper. It got me thinking, there were so many methods for holding pits into drivers; this one, the versions used in yankee drivers, little tounges, etc. Does anyone know why it took so long for the hex shank bit to "evolve"? I would think it has to do with machining of a "standard" hex of steel, but was wondering if anyone else had a better guess. Adam perhaps?
