PMF and epoxy resin

Finishes, paints and coatings

PMF and epoxy resin

Postby FBJcreation » Tue Mar 19, 2019 12:18 pm

Can you do PMF over epoxy resin for skinning? Thinking of doing an epoxy base on bare wood like a “mix” as it would strength and waterproof the wood. Then do PMF on top. Thanks.
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Re: PMF and epoxy resin

Postby Sparksalot » Tue Mar 19, 2019 12:24 pm

Why not go ahead and do the fiberglass too? The cloth is the inexpensive part compared to the epoxy.
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Re: PMF and epoxy resin

Postby Pmullen503 » Tue Mar 19, 2019 1:09 pm

Sparksalot wrote:Why not go ahead and do the fiberglass too? The cloth is the inexpensive part compared to the epoxy.


Ditto. Epoxy resin only over wood is a waste. It will eventually crack from expansion and contraction of the wood. Use glass cloth if you are going to use epoxy.

PMF is a good way to protect wood. Boats have used it forever in a very harsh environment.
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Re: PMF and epoxy resin

Postby tony.latham » Tue Mar 19, 2019 2:22 pm

I agree on the fiberglass. You're toying with a dissimilar materials issue. Fiberglassing works and isn't an artisan operation. I've always felt that poor in PMF is a bit of an exaggeration since it doesn't save much money.

Epoxy resin only over wood is a waste. It will eventually crack from expansion and contraction of the wood.


I use Raka's thin epoxy resin for areas such as the galley floor and it soaks into the wood about 1/16" deep. I've been going this route for years without any cracking. In a sense, it becomes a wood/epoxy matrix.

:thinking:

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