Polycrylic and canvas?

Canvas covered foamies (Thrifty Alternatives...)

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Polycrylic and canvas?

Postby stepcut » Mon Mar 19, 2018 11:58 am

Has anyone tried using polycrylic instead of wood glue? I know the RC crowd has been experimenting with polycrylic and fiberglass.

https://www.youtube.com/watch?v=WuEHe6cmnp4

In that use case, polycrylic is cheaper, lighter, and easier to work with than epoxy. But not as strong or puncture resistant. Though, for 50% the weight you still get 60% the strength.

A gallon of polycrylic is around $50/gallon. So it is definitely more expensive than glue+paint.

In my case, I am building a foamie boat and wondering if polycrylic might be a good choice for the parts of the boat that will be below the waterline.

Anyone have thoughts or experience? I searched for polycrylic but did not get any hits.
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Re: Polycrylic and canvas?

Postby Pmullen503 » Mon Mar 19, 2018 12:35 pm

For a boat I'd use epoxy.

Unless this is just a test and longevity is less important than initial cost. I'd use TB2 or 3 and lots of paint with canvas. Canvas will soak up a lot of poly. Poly will be easier to work with with fiberglass cloth.

I'm one of those RC guys that uses Poly and lightweight glass over foam.
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