Step 7Clean Up Sharp Edges
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Clean up the cut edges of the can using the Wet & Dry paper, you will get a better result if the paper is wet but not soggy. Ensure you remove any burrs (sharp, spiky bits), the best method is to sand parallel to the edge of the metal then lightly sand round each side of the edge at a 45 degree angle. Let the can dry fully before attempting step 11, unless you like to live dangerously of course, I prefer to keep water away from electricity as it really hurts when it goes wrong!