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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 869 views 0 times favorited 6 replies Add to Favorites Watch
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ashahidan

64 posts in 1818 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

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Loren

7808 posts in 2367 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

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tefinn

1217 posts in 1156 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.

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rockindavan

284 posts in 1356 days


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

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

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NiteWalker

2710 posts in 1296 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.

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waho6o9

5193 posts in 1296 days


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

How about using a spline?

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ashahidan

64 posts in 1818 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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