Keith and List n a message dated 97-03-07 17:57:21 EST, you write: << if a tech can undo the allen head bolt with a screwdriver, then most likely a student can as well. Hence, the allen wrench concept, to literally secure the bolt *very* tight, beyond the use of a screwdriver. >> I ran into one in a school where some enterprising person had filled the hex hole with some rock-solid compound that was impossible to dig out. I had to resort to using vice-grips on the perimeter of the screw! Bill Maxim, RPT
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