What am I doing wrong?
I'm new to polishing and had a question or two. I'm starting out with a 1/2" piece of aliminum. I'm using a bench grinder 1hp @ 3500rpm with 6" buffing wheels. First step was wet sand with 400 in a crisscross pattern, then to 600 wet. After that it appeared In good shape to go to the wheels. Started with brown and got a pretty good finish but some pits and hairline scratches. I thought the scratches were from the brown so I continued onto a seperate wheel with red. Some scratches came out and the shine got a little better but I continued using the red awhile until the aluminum was almost to hot to hold with bear hands. It seemed to get worse after awhile with milky streaks in it. Did I heat it too much? and I still have some hairline scratches. I'm not sure which direction to go now.
Thanks for any help.
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