- 1). Prepare your sheet metal or piece of metal. Unscrew or unbolt the metal piece if it's attached to something.
- 2). Place the metal onto a flat surface, marking circular areas using a protractor and a pencil. These will act as a guide once you get the metal under the drill.
- 3). Remove the drill bit from the drill using the chuck key. Replace it with a solid core wire brush used for buffing and brushing of materials. You can experiment with other options like sand paper and abrasive pads if you'd like.
- 4). Tighten the wire brush into the drill bit using the chuck key. Place a zip tie around the end of the brush for smaller, tighter circles. Tighten the zip tie as desired. Put on your gloves and goggles.
- 5). Hold the metal flat underneath the drill bit with one hand. Turn on the drill with the other and lower the bit down onto the metal so that it creates a shallow swirl on the outside of the metal.
- 6). Lift up on the drill when you're satisfied with the mark. Move the metal over slightly to hit different spots. Follow your protractor markings as a guide. Stop when you've added the number of swirls you want.
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