How Do You Grind and Polish Slate

Gently grind the slate edges with a hand-held grinder. Bevel the top edge at a 45-degree angle, or a rounded edge or no angle at all, depending on your preference. Keep the grinder moving in slow arcs. Grind until the shape is as desired.

Can you grind slate?

Grinding. Unfortunately, slate responds to grinding in a different manner than natural stones, such as travertine and granite. You can grind and sand the surface of most natural stones, then use different grit diamond sand papers to resurface the pieces back to their original sheen.

Can you use sandpaper on slate?

You should use a fine-grit sandpaper as it is ideal to sand scratches by spot sanding and concentrating on the problematic areas. Step 1: Start with a lower grit number for honing and move up to a bigger grit, such as a 400-grit or a 600-grit, to slowly and gradually achieve a polished look that is consistent.