Sand down the top layer of finish and/or paint with sandpaper.
- If your frame already has multiple layers of paint and/or finish, use a low grit sand paper to remove as much as the top layers as possible.
- If your frame only has a thin layer of finish and/or stain, use a high grit sand paper to slightly add texture to the frame.
Sanding down the frame allows the primer and paint to stick. Simply painting the frame as is may lead to unwanted results.
Wipe down the frame with a damp rag to remove any sanding dust. Once dry, you are ready to start priming.