Pin Blocks and OS pins

[Joseph Garrett]

I used to use the gun bore brushes, but found them to be inconsistant. I
prefer to use the drill bit, appropriate for that size pin, (as if it were a
new block). I just chuck the drill bit in a slow RPM 1/2" (godzilla type)
hand drill and ream away. This has proven to be more controllable, for me.
Regards,
Joe Garrett, RPT, (Oregon)