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How to glue mdf edge to edge

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Forum topic by ashahidan posted 10-30-2013 03:31 AM 823 views 0 times favorited 6 replies Add to Favorites Watch
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ashahidan

64 posts in 1787 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?

Shahidan

-- asm


6 replies so far

View Loren's profile

Loren

7734 posts in 2336 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.

-- http://lawoodworking.com

View tefinn's profile

tefinn

1215 posts in 1125 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

rockindavan

283 posts in 1324 days


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

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

View NiteWalker's profile

NiteWalker

2710 posts in 1265 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

waho6o9

5081 posts in 1265 days


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

How about using a spline?

View ashahidan's profile

ashahidan

64 posts in 1787 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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