Maybe you are not using the greasless properly because 80 grit is more than enaugh to remove chrome plating. You have to built a head of greasless on your 1/4" spiral. let it dry for at lease an hour. The best way to work is to use 4 wheel mounted on 2 two sided bench grinders. When the head is starting to where off put some greasless on it and go work on anothere wheel. That way you never stop and always working with dry greasless. Always remember not to where out completely the head of greasless because it's not going to have enough time to dry.
hope this will help
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