How to Fiberglass: Fixing a Cracked Kiteboard

Step 8 Sand the Fiber Glass and Resin Layers

Once everything has had a chance to dry overnight it's time for another round of sanding.

Grab the power sander and set it up with a medium grit sandpaper and sand down any bumps or ripples in the dried resin.

Make sure you don't go too deep, since you'll be sanding away the fiberglass that you just worked so hard on laying down.

Use the sander to make everything as smooth as possible. That includes gently feathering the resin at the edges of the area where the resin meets the original project surface. This is also a good time to trim off the excess fiberglass that overhangs the project. Just lightly sanding the rails or sides of the project surface will take off the brittle resin filled ends of the fiberglass.