Wednesday, November 16, 2022

Carbide Tap

 What a difference!  It cut not much harder than hardened steel does in aluminum.  The tape was a spiral point so I could not get threads all the way through the hole before reaching the far side of the hole.  I wish it were a spiral flute tap, they excavate the material as they turn.  The hole was enough to turn a 1/4"-20 screw all the way through until it was in the hole.  I now have a 1/2" thick counterweight.  As soon as I have verified how many of these is the right amount for the Televue, I will epoxy them together.

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