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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
If any fiberglass body parts are made with matt or choppergun it is easy to sand it thinner with a DA sander and 36 grit sandpaper from the backside and lay up 6 or 8oz fiberglass cloth in sections over it.
Then use a bondo squeegee over the cloth to squeegee out the excess resin pooled up between layers of glass cloth.

Kind of a similar result to vacuum bagging... it makes the layup stronger and lighter because the excess resin is squeezed out and removed

Most hand laid cloth fiberglass layups start with a layer or 2 of lightweight fiberglass matt first because it conforms to curved and angled surfaces really well when wet out with resin and acts as a bonding agent for layers of fiberglass cloth laid over it.

If you are glassing right angled pieces together then a layer of cabosil and resin mixed together as a fillet in the corners will glue the parts together and makes a concave rounded curved surface if you swipe it with a convex curved squeegee for the glass to lay on without air bubbles in the corners when wet out.
Old 07-30-2010, 10:50 AM
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