head

Is it practical to counterbore cast iron or hardened steel cylinder head valve seats with a mini mill? If not, what would be the least expensive new or used machine that could handle 16 valve seats per week on a routine basis? Exhaust 1.757" x .315" Intake 2.068" x .315" The cutter heads look...

Is there anyway to get this Enco 60639 boring head to fit in a Bridgeport mill? It seems to me to be far too big. I’d like to keep it if I can as I obviously need a boring head for my mill. It came with the small lathe and the Bridgeport I recently acquired.

I've enjoyed setting up the South Bend VMM I bought a few weeks back. I've been doing a pretty thorough examination of the machine and noticed something that has me worried. The head is not 'square' to the table. Some explanation is needed: The head on this machine does not 'nod' in the same...