Glassing with fiberglass joint tape

General Discussion
1

I’m done with my second shape out of the Home Depot EPS. That actually makes 2 blanks for $14. I’m sealing this time, using the diluted lightweight spackle method, just to see the difference.

I’ve been wondering, in the interest of maintaining the whole garage-board feel, if anyone’s ever used fiberglass joint tape to glass a board. It would probably take quite a few rolls, to overlap by 1/2" on each pass, but I’m hoping I’d end up with a kind of a mummy look, and it might be pretty light & strong. That stuff has a VERY open weave, but who knows…with a couple lifts of nice epoxy resins, it might work out. I could even manage flex by how many wraps I did and whether they went sideways or lengthways.

It would certainly bypass the whole cutlap vs. freelap thing, as well as eliminating any folds at the ends.

I thought of it as I basted my shaped blank with wet spackle - it felt so much like using topping mud that I couldn’t stop the train of thought until it reached this station.

I’d really appreciate your thoughts on this. Thanks

Btw, the attachment is the graphic I’ll throw in as a rice paper lam…

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2

Get a piece of 4oz glass and a piece of joint tape. Tear each. Notice the difference?

The joint tape is single strand fiberglass, so no resin will soak into the weave. Regular glass has many tiny fibers that soak up the resin. Just my guess, but it’s probably a wasted effort. Why not try aluminum door screen instead?

3

You know, I actually had a very similar idea the last time I broke my arm… I thought that fancy pre-preg fiberglass stuff that they make your cast out of these days would be a pretty cool thing to use… Seems to stick to itself just fine, but I’m imagining with a lack of liquid resin it wouldn’t stick to the blank that well…