On the HF mini mill:
Bad luck. After a good bit of work fitting it, my new/used motor turned out to be NFG. The motor shop that sold it to me gave it a test spin when I bought it, as did I when I got home. But, it's no good, as I found out once I had already gone to the none too easy task of installing it.
There are several failure modes of electric motors; one being that it will run quietly, no load, just fine. But when you load it, it is down on power and quickly seriously overheats. (Damaged windings.) That's the deal with this one. Bummer!
Being a determined soul, (read that STUBBORN), I went back to researching and found a good motor--> new this time!! It is the same basic form factor as the original, so won't be too tough to fit. But it is three times stronger than the original at 1.5 amps. It is obviously a much better motor and I'm happy with it, and the cost was the same as a weak, stock replacement motor. This is going to work nicely.
https://www.amazon.com/Broan-9908059.../dp/B002NC8O5G
Vettepilot