Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Painting die-cast metal parts requires careful preparation and technique to achieve a durable, professional finish. Here’s a step-by-step guide:

Steps to Paint Die-Cast Metal Parts:

1.Clean Thoroughly:

Wash parts with warm soapy water or degreaser (e.g., isopropyl alcohol) to remove oils and dirt.

Dry completely with a lint-free cloth or compressed air.

2.Prep the Surface:

If repainting, strip old paint with a metal-safe chemical stripper or fine sandpaper (400-600 grit).

Lightly sand with 600-800 grit sandpaper or a scuff pad to improve paint adhesion.

Remove dust with a tack cloth or compressed air.

3.Apply Primer:

Use a self-etching or automotive primer suitable for die-cast metals (zinc or aluminum alloys).

Spray 2-3 thin coats, holding the can 8-12 inches away, allowing 10-15 minutes between coats.

Let cure fully (typically 24 hours, per product instructions).

4.Paint Application:

Choose metal-compatible paints like acrylic enamel, lacquer, or model paints (e.g., Tamiya, Vallejo).

Spray or brush in thin, even coats in a well-ventilated area (60-80°F, low humidity).

Apply 2-4 coats, drying 15-30 minutes between coats. For brushing, thin paint slightly to avoid marks.

Let paint cure fully (check paint instructions).

5.Seal (Optional):

Apply a compatible clear coat (matte, satin, or gloss) in thin layers to protect the finish.

Allow 24-48 hours for curing before handling.

6.Finishing Touches:

Check for flaws; wet-sand lightly with 1000-2000 grit sandpaper if needed, then touch up.

Add weathering or details (e.g., washes) before the clear coat for realistic effects.