Does Shellac interfere with glue?

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Forum topic by mummykicks posted 09-16-2013 02:48 PM 962 views 0 times favorited 2 replies Add to Favorites Watch
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85 posts in 1224 days

09-16-2013 02:48 PM

I was pondering this while trying to decide if I should seal the inside of a hollow art table top I’m making, or any other box I end up making. So I decided to do a little experiment.
One coat of shellac on a some plywood, and one coat on the edges of the ribs I was going to glue, one plywood, one mdf.
Some titebond and a couple pocket screws to provide the clamping:

Let it cure overnight at 80 something degrees. Removed screws and tried to break it apart by hand, no dice. Got my deadblow hammer and gave it a good whack and it came apart:

I think it’s safe to say it doesn’t, at least one coat doesn’t. If I left the screws in there I don’t think that joint is ever coming apart.

Anyway, I just thought I’d post it on the remote chance someone else ever wonders about this as well…

2 replies so far

View a1Jim's profile


115177 posts in 2999 days

#1 posted 09-16-2013 03:24 PM

Good idea to conduct a test.You test answers your question. In most cases I would say mask of where your going to glue up .

-- Custom furniture

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Jim Jakosh

16809 posts in 2527 days

#2 posted 09-24-2013 11:37 PM

I would avoid any sealer on the wood where the glue is expected to be holding. It needs bare wood to bite in. It will hold to a degree because of it’s nature, but not like raw wood!...........Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

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