- 1). Wash the ABS plastic with soap and rags. Rinse away all soapy residue to prevent problems with adhesion. Allow the ABS to dry completely.
- 2). Load a palm sander with 300-grit sandpaper. Abrade the ABS to promote adhesion by lightly sanding it. Sand the plastic until it feels slightly rough to your fingertips.
- 3). Wipe down the ABS with a tack cloth.
- 4). Protect any parts of the ABS plastic you want left unpainted by covering them with tape.
- 5). Lay the ABS plastic on top of a drop cloth.
- 6). Apply primer to the ABS in brief, intermittent bursts. Do not apply in a long, steady, consistent stream as this may lead to runs.
- 7). Allow the ABS to dry for three hours, and then apply two coats of acrylic spray paint to the plastic using the same application technique you used in step six. Allow two hours of dry time between each coat.
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