Originally posted by stefan
Why would you grind them?
I give them to the plating shop after break in and the put 7-10 microns of hard chrome on the pin.
Hmmm . . OK, just 7-10 microns is it.
I was just relating to my own experience in having a 1:1 cars camshaft journals hard chromed. In that case the chrome had to be ground to size since apart from anything else, the chrome isn't deposited evenly and also leaves little mountains and globules etc.
But for only 7-10 microns, maybe the issue doesn't arise.
Also, as I understand it (or don't) hard chroming is different from "normal" chrome plating - something to do with ensuring the bond between the chrome and the substrate for a working part as opposed to a "decorative part. Again, maybe there's not an issue since the depth is minimal.