DIYbanter - View Single Post

wrote:
Any chance the pad loaded up with galled aluminum, so that you were
basically trying to polish aluminum *with* aluminum?

Abrade or machine it flat and start over...

I think that is exactly what is happening, as I have seen this exact
behavior with normal abrasive discs as well. And I know they clog up
readily, as the splotch of aluminum is hard to miss. I suspect that if
I include a cleaning step every pass, the problem may disappear.