"Gerald Ross" wrote in message
...

The faster the speed, the faster the cut, and more heat generated.


No. Heat doesn't come from removing material, it comes from rubbing against
what's there.

This bit of misinformation keeps getting repeated all the time, but if you
reduce the pressure of one item against another while grinding, sanding or
buffing, you will reduce the amount of heat.

That's why your 15,000 rpm orbital sander says not to press or you'll melt
the velcro.