The advantage with the square drive is that a simple tap wrench can then fit any tap within a given size range, metric UN or Whit. If you make a hex drive who, how and when are the standards for the hex going to be defined??? Without standards the whole point of what you are trying to achieve will be lost. Just MHO.
I have some chuck type wrenches which work well. I have made long extensions for one off jobs in the past. I have also used a small adjustable spanner to get into an awkward spot. I have seen people use a battery drill for tapping thin sheet, I have not tried this. Looks a bit dodgy!
Cooperman’s hex drive chuck types are new to me, looks a good idea.
My "tip of the day" award goes to Arwyn for his file a nut to fit, simple and easy to do.
Cheers
John.
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