In the market for a bottom end rebuild and have found a reground crank already hardened, crack checked, etc..

How do shops cut corners? How can I guage their work or even trust what has been said to be done is done correctly? (ie.. nitride hardening on crank regrinds?)

Doesn't a machine do the actual grinding?

I am very new to this. I am not sure of what to look for. If someone has been in business for 30 years, he must be doing something right.?? right?

I have read that the regrinds should only be metric, but I have a lead on a standard cut and they make bearings for this.

Any leads on machine shops in Portland, OR?

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