Fiberglass Boat Build Continues

Now it is time to break out the fiberglass. Fiberglass resin and 1 ½ ounce mat is applied over the foam surfaces and allowed to cure. When I fiberglass over this kind of foam, I like to brush a nice thick layer of resin directly on top of the foam and then lay resin soaked pieces of mat on top of that. Like with all my projects, I allow the mat and fiberglass resin to cure to a gel and then I use a razor knife to trim the edges of excess material.

Hull with resin and mat

Hull with resin and mat

This is without a doubt the best time to rid your project of excess material. If I were to have missed this time frame I simply would have done the trimming with a Dremel Tool or a sander. Since the bottom of this boat has two distinct parts – the hull and the sponsons, I follow the exact same procedure in the construction of the sponsons.

Sponsons shaped in foam and ready for fiberglass

Sponsons shaped in foam and ready for fiberglass

Unfortunately for me, I realized after the sponsons were covered with mat and resin that I somehow screwed up the diameter of them. They are too BIG! I will deal with this a little later. In order to keep my mind off of this mistake, I go ahead and start smoothing the hull bottom over with bondo. This process involves using a plastic spreader and working bondo over the hull in way that will smooth out the imperfections on the fiberglass surface. Basically it goes like this, apply bondo – then sand – over and over again until it is right. For this project I used my belt sander with a medium grit belt to speed the process. It worked great!

Bondo on the hull - this is a process - be patient!

Bondo on the hull - this is a process - be patient!

My next set of posts will deal with my sponson issue.

 

Happy Glassing


Steve

www.fiberglassmoldmanual.com

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