From my own experience using ceramic belts and a slower speed (because I have a variable speed 2x72) I have no problem grinding on stainless pins. So, I would think that slower speed would help a lot if you can find a way to do it. Usong files is a good alternative.
Also, if your fresh aluminum oxide belts are the usual brown ones they are made for wood. Even a fresh belt will quickly go dull enough to cause heat build up ....
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