3M 51073 GENERAL PURPOSE BODY FILLER 3LITRE WITH HARDENER PREMIUM CAR PRODUCT

The 3M 51073 General Purpose Premium Car Body Filler is a high-quality filler designed for various auto body repair tasks. Here’s a guide on its usage:

Application Instructions:

1. Surface Preparation:

   • Ensure the surface is clean, dry, and free from rust, oil, and dust. For best adhesion, sand the area lightly with P80-P180 grit sandpaper.

2. Mixing:

   • Combine the filler with the hardener at the recommended ratio (usually about 2% hardener by weight).
   • Mix thoroughly until the color is consistent with no streaks, but avoid over-mixing to prevent air bubbles.

3. Application:

   • Apply the filler with a spreader or spatula, pressing firmly to remove trapped air.
   • Layer to the desired thickness but avoid applying too thick a coat, as this could lead to cracking or uneven curing.

4. Curing:

   • Allow the filler to cure. This typically takes around 20-30 minutes, depending on ambient temperature and hardener ratio.
   • Once cured, the filler can be sanded. Start with a coarse grit (P80-P120) and finish with a finer grit (P180-P240) for a smooth finish.

5. Painting:

   • After achieving a smooth surface, it can be primed and painted as desired.