Quote:
Originally Posted by Slipknot
don't waste your money on the cheap ones Paul
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Agreed. It takes a random orbit with REAL power to have any real corrective effect. And even then you'll be moving very slowly, an inch every few seconds at the fastest and needing multiple passes. Depending on what you are trying to correct it may be enough. In my opinion they are better used for pre-wax cleaners and applying waxes.
Rotary (aka circular or high speed) is much more effective, faster, and far less tiring to use. Gel-coat is pretty tough compared to say car paint but you can do damage if you let it while with a random orbit it's almost impossible. But that ability to cut is it's magic.