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Has anyone used thickened epoxy to fill tape weave?

Submitted by jeffh - Tue, 4/20/10 » 11:34 PM

I've added two coats to the entire interior portion of the boat. The fiberglass tape still shows some weave and I can feel the weave. There are also jagged edges on the weave which I assume I can sand down before painting. This will be a painted interior and hull with a bright deck. If I used a little cabosil thickened epoxy on the tape...would that be a problem?

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RE: Has anyone used thickened epoxy to fill tape weave?

» Submitted by Laszlo - Tue, 4/20/10 » 11:38 PM

Yes. It would be very difficult to sand. Use phenolic microballoons, instead. The mix is lighter and much easier to sand.

Have fun,

Laszlo

RE: Has anyone used thickened epoxy to fill tape weave?

» Submitted by jeffh - Wed, 4/21/10 » 9:05 AM

Thanks Laszlo. I've read posts about using phenolic micro baloons and should have known. I want to finish this step today, so I hope my local West Marine has the stuff.

RE: Has anyone used thickened epoxy to fill tape weave?

» Submitted by jeffh - Wed, 4/21/10 » 1:22 PM

So, my local West Marine did not have MAS phenolic microballoons. They did have West 410, which according to the MSDS is:

"Blend containing thermoplastic and inorganic microspheres" Microspheres sounds a lot like microballoons to me.