On Apr 11, 1:36*pm, "PrecisionmachinisT"
wrote:
"Cydrome Leader" wrote in message

...



The question is are there rules of thumb for how much runout is
acceptable for a small machine like this?

Machine size does not matter.

The smaller the end mill diameter, the more important it becomes to minimize
runout.

He will need to learn how to tap the end mill in to reduce the
runout.