Prep for Paint

Preparing Resin-Printed Model Car Parts for Paint

Follow these simple steps for the best finish on your 3D-printed resin model car parts.

1. Remove Supports

• Clip support nubs with flush cutters
• Trim small bumps with a hobby knife
• Do not tear or twist supports

2. Wet Sand the Part

• Start with 400–600 grit
• Smooth with 800–1000 grit
• Finish with 1500 grit
• Always wet sand (safer + smoother)

3. Wash the Part

• Use warm water + dish soap
• Scrub gently with a soft brush
• Rinse and air-dry completely

4. Fix Imperfections

• Use glazing/spot putty for pits or scratches
• Let dry, then sand smooth (800–1000 grit)

5. Degrease

• Wipe with isopropyl alcohol
• Keep fingers off afterward

6. Prime

• Use Tamiya, Mr. Surfacer, or Filler Primer
• Apply 2–3 light coats
• Let dry 20–30 minutes between coats

7. Final Prep + Paint

• Lightly sand primer (1500–2000 grit)
• Your part is now ready for airbrush, lacquer, enamel, or acrylic paint