Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Yes, metal-cast paint (often called "metallic cast paint" or products like Dupli-Color Metalcast, Krylon Premium Metallic, or VHT Anodized Color) can be applied to plastic, but with some important caveats and proper preparation – otherwise it will peel, crack, or fail quickly.

When and How It Works Well on Plastic

Metalcast paints are essentially tinted clear coats with very fine metallic flakes designed to go over a reflective base (usually chrome, polished metal, or a bright silver/aluminum base coat). On plastic, they work great if you follow this process:

1.Plastic must be properly prepped  

Clean thoroughly (degrease with isopropyl alkohol or prep solvent).  

Lightly scuff with 400–600 grit sandpaper or a red Scotch-Brite pad (creates mechanical adhesion).  

Use a plastic adhesion promoter (e.g., Bulldog, SEM Plastic Adhesion Promoter, or Dupli-Color Adhesion Promoter). This is almost mandatory on flexible or slick plastics like ABS, polypropylene, polyethylene, or TPO bumpers.

2.Prime with the right primer  

Use a high-quality plastic primer or filler primer (gray or white).  

Most people spray a bright silver or aluminum base first (e.g., Rust-Oleum Bright Coat Metallic or a chrome-like paint) because Metalcast colors are translucent and look best over a reflective undercoat.

3.Apply the Metalcast paint  

Light mist coats (2–4 light passes).  

It dries very quickly but remains somewhat soft, so handle carefully for the first day.

4.Clear coat (recommended)  

Metalcast paints are not very durable on their own (they can scratch or fade).  

After the Metalcast is fully dry (usually 30–60 min), apply 2–3 coats of a compatible 2K clear coat (urethane) or a high-quality 1K automotive clear for protection and depth. This step is almost essential for exterior or high-wear parts.