Sanding Marks

Sanding marks from the substrate or primer become visible after the paint surface has dried.

Cause:

1. Incorrect primer preparation: insufficient filler or low-quality filler, as well as excessively coarse sandpaper.

2. Poor sanding tools or incorrect sanding technique.

3. Insufficient topcoat thickness.

4. Sanding without a sanding block on flat surfaces.

5. Excessively thick primer layer before the topcoat and insufficient drying time for the primer.

6. Incorrect preparation of the old paint surface.

Solution:

1. Sand with very fine sandpaper and then polish.

2. If the scratches are deep, sand off the paint and redo the process.

Recommended products to prevent and fix potential issues:

• Abrasives and accessories

• Paint spray guns
   

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