How To Repair -
Lay an ice pack over the crack for 45 minutes to make the material contract and widen the gap.
Sand the area starting with 220-grit sandpaper , moving up to 320-grit , and finishing with 400-grit . Always use a circular motion and "feather" the edges to blend the repair. Cracks (The "Ice Pack" Method): How to Repair
Once cured (typically 24 hours), sand the surface smooth using the grit sequence mentioned above. 2. Other Interpretations Lay an ice pack over the crack for
Use a wet, gray Scotch-Brite™ pad in a circular motion to buff out the mark. Keep the area damp to avoid new scratches. moving up to 320-grit