Has anyone used thickened epoxy to fill tape weave?

Builder's Forum
1

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?

2

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

Have fun,

Laszlo

 

3

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.

4

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.