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cheap bench grinders are from 2400-3000 rpm, which is a bit too fast, as you open the material too much (overheat).

i'd buy one that is adjustable, should be round 50-60 quid new with a lot of products to use on the cars also.

http://www.ebay.co.uk/sch/i.html?_sacat ... fer&_frs=1

I've orderd myself one, I supose it will also be used on other cars, I seem to own a lot of polishing equipment now
Thanks a lot