How to Keep Fiberglass From Sticking to Forms

Several coats of car paste wax applied to the surface of a fiberglass form will keep the fiberglass from sticking.

Fiberglass will stick to a form that is not smooth and slick. Any build up of fiberglass resin, nicks in the form surface or build-up of wax will cause the fiberglass to stick to the form. A daily inspection of the forms is needed to make sure the surface is in top condition. Looking at the form is not enough, though --- feel the surface of the form with the palm of your hand. Check for any area that has a rough texture. Sand and wax the area before using the form.

Things You'll Need

• Acetone
• Soft cloth
• Rubber gloves
• Liquid sandpaper, 800-grit
• Paste car wax

Instructions

1. Remove the wax from the surface of the form with acetone. Dip a clean cloth in acetone. Use a circular motion and cover the entire form. Dip the cloth in the acetone as needed. Allow to dry for five minutes.

2. Sand the surface of the form with 800-grit liquid sandpaper. Use a clean cloth to apply the liquid sandpaper. Work in a circular motion over the entire form. Allow the form to dry 15 minutes.

3. Apply a coat of paste wax to the surface using a circular motion. Remove the coat of wax using a circular motion. Let the wax set for 15 minutes. Repeat the process for a total of five coats.