Sanding Hacks

Fiberglass boats rely on a tough gelcoat layer to protect the hull from water and UV damage. When refinishing or repairing that surface, sanding is essential—but it must be done carefully to avoid cutting through the gelcoat or distorting contours....

Fiberglass is durable and versatile, used in boats, cars, and surfboards—but sanding it incorrectly can cause costly damage. The key is controlling heat, grit progression, and pressure. This guide covers how to sand fiberglass safely to achieve a smooth surface...