With all due respect to Mr Carmihael's achievements on the bench rest circuit and his writings... On this one he is full of schit.
I am not saying his spud will not work, but rather it is a ridiculous route compared to a simple spring-loaded plunger. I understand his intent in letting the lugs seperate with each turn so the abrasive will not be wiped off the high spot, and frequent redistributions of grit are required when lapping, but I do not see the spud changing that...
art
