How to glue mdf edge to edge

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Forum topic by ashahidan posted 10-30-2013 03:31 AM 1630 views 0 times favorited 6 replies Add to Favorites Watch
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64 posts in 2189 days

10-30-2013 03:31 AM

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


7967 posts in 2738 days

#1 posted 10-30-2013 03:48 AM

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


1222 posts in 1527 days

#2 posted 10-30-2013 03:49 AM

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


292 posts in 1726 days

#3 posted 10-30-2013 03:50 AM

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

View NiteWalker's profile


2728 posts in 1667 days

#4 posted 10-30-2013 04:15 AM

+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)


6394 posts in 1667 days

#5 posted 10-30-2013 04:19 AM

How about using a spline?

View ashahidan's profile


64 posts in 2189 days

#6 posted 10-30-2013 02:52 PM

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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