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Is 2 part epoxy less affected by wood expansion

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Forum topic by OldBull posted 12-15-2020 08:37 PM 460 views 0 times favorited 2 replies Add to Favorites Watch
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OldBull

517 posts in 545 days


12-15-2020 08:37 PM

If a very thin frame needs to be glued and you have wood glue and epoxy, would the epoxy joint be less likely to fail over time from wood expansion ? The joints are end grain 45° mitered frame.

Thanks for the opinions.


2 replies so far

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mitch_56

60 posts in 1723 days


#1 posted 12-15-2020 11:42 PM

In this case, I don’t think it would matter. If you properly size the joint (meaning glue size, or epoxy size) so it’s correctly bonded and not starved by capillary action, both products will be capable of standing up to the test of time.

If the amount of wood involved is very small, then the amount of wood movement is very, very small, so neither product will likely be terribly stressed.

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bilyo

1409 posts in 2352 days


#2 posted 12-16-2020 01:08 AM

Mitch is correct. However, there are better joints to use. First, you could put a spline across the joint after it is glued up. Or, you could use a combination miter/halflap joint. Each of these would be stronger but none of them would be compromised by wood movement.

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