Crockett, The proceedure I explained was "crude" indeed by todays standards.The motor was diassembled clean and reassmbled.The pistons were beveled something close to the original or what we thought would work. The cutting wheel on the mill a very large diameter( probably 18"-20") and had 30 or 40 cutters.The mill was a actually a large moving table with a frame work to suspend a head or block. The passes were made very slow and I am sure there was some "piston rock" even tho shims were install between the cylinder walls and skirts of the pistons being cut. Like I said "crude and time consuming" but successful in a time when it was near impossible to run out and buy what you wanted even if you had the money.--Paul
