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Grinding a garage floor for an epoxy coating wasn 39 t easy until now If you will be grinding dry with your own shop vacuum then one other tool you may to shim the tool with a washer to raise the shroud off the floor to avoid suction lock If they don 39 t pass the water test toss in a small little handful of clean sand on those
Washing removes mold release materials un reacted styrene on polyester surfaces to give them the full 36–60 grit grind to ensure good adhesion of the coating system Sand any raw resin until completely dull Blow off the surface with clean dry compressed air while dry wiping to remove sanding dust and residue