How to glue mdf edge to edge

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Forum topic by ashahidan posted 268 days ago 700 views 0 times favorited 6 replies Add to Favorites Watch
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64 posts in 1697 days

268 days ago

I have a few pieces of one inch thick, 5 by 8 inches of mdf board. I have tried joining them to make a few bigger pieces with white glue but the edges would’‘t stick together. The edges seem suck the glue into the fiber. I then tried using fiberglass glue. This also failed.
Is there any other ways to glue mdf edge to edge?


-- asm

6 replies so far

View Loren's profile (online now)


7231 posts in 2246 days

#1 posted 268 days ago

You may have success making a glue sizing out of glue
thinned with water. Apply 1 coat and let it dry, then
another. This should be enough to keep future glue
from sucking into the MDF edges.


View tefinn's profile


1199 posts in 1035 days

#2 posted 268 days ago

MDF doesn’t join together like real wood will. You will need to use some type of dowels, biscuits or mechanical fastener like pocket screws. You might also try polyurethane glue or epxoy. Whatever you use the joint won’t have any real structural strength like edge joined wood. If you dont support it from below and put weight on it, it will break.

-- Tom Finnigan - Measures? We don't need no stinking measures! - Hmm, maybe thats why my project pieces don't fit.

View rockindavan's profile


283 posts in 1234 days

#3 posted 268 days ago

Biscuits or dominos…or maybe start with a bigger board lol

View NiteWalker's profile


2704 posts in 1175 days

#4 posted 268 days ago

+1 on biscuits or dowels, but if you can, use a new board.

-- He who dies with the most tools... dies with the emptiest wallet.

View waho6o9's profile (online now)


4746 posts in 1175 days

#5 posted 268 days ago

How about using a spline?

View ashahidan's profile


64 posts in 1697 days

#6 posted 268 days ago

Thank you for your suggestions.
I appreciate your suggestions but as you all say the joint would not be strong I might as well use the boards for other small projects.
Epoxy is rather expensive for me.

Thank you again.

-- asm

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