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How to repair gouged MDF?

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Forum topic by JohnEinNJ posted 751 days ago 3293 views 0 times favorited 17 replies Add to Favorites Watch
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JohnEinNJ

84 posts in 930 days


751 days ago

So I just finished building Wood Magazine’s tilt-top workbench (like this: http://lumberjocks.com/projects/57008), and was trimming up the maple band around the edge with a router. The router grabbed onto the edge, and did a little dance on the MDF top, making about a 1/2 inch deep by 3 inch long gouge :(. What’s the best way to fill & repair MDF?


17 replies so far

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tyskkvinna

1307 posts in 1568 days


#1 posted 751 days ago

I have had decent luck with MDF sawdust and glue (since, yknow, that’s basically what it is right now!)

-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt

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Tyrone D

314 posts in 915 days


#2 posted 751 days ago

When filling holes in MDF drywall compound works very good but I doubt it’d work in your situation.

-- --Tyrone - BC, Canada "Nothing is ever perfect, we just run out of time."

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Alexandre

1417 posts in 774 days


#3 posted 751 days ago

I think some sanding dust mixed with glue to make a nice thick mixture and pour it in, then when dry, sand it (Gosh, Wear a dust mask while doing this) and there you go! Hope this helps

-- My terrible signature...

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mark4345

55 posts in 1006 days


#4 posted 751 days ago

bondo

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Wdwerker

331 posts in 816 days


#5 posted 751 days ago

Bondo rules! Drywall compound would only be for vertical surfaces.

-- Fine Custom Woodwork since 1978

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canadianchips

1831 posts in 1580 days


#6 posted 751 days ago

Liz said it best. Sawdust and glue.

-- "My mission in life - make everyone smile !"

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doughan

96 posts in 1174 days


#7 posted 751 days ago

saw dust and glue or bondo….bondo if you are in a hurry…..mix it hot and fast then use a putty knife to get it close before it gets to hard.

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AandCstyle

1224 posts in 840 days


#8 posted 751 days ago

+1 Bondo

-- Art

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waho6o9

4687 posts in 1159 days


#9 posted 751 days ago

bondo, yeah buddy

View mtenterprises's profile

mtenterprises

812 posts in 1275 days


#10 posted 751 days ago

Router out the damaged area and insert a new MDF patch, glue as needed.
MIKE

-- See pictures on Flickr - http://www.flickr.com/photos/44216106@N07/ And visit my Facebook page - facebook.com/MTEnterprises

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JohnEinNJ

84 posts in 930 days


#11 posted 743 days ago

Thanks to everyone for your responses. Just to wrap this up, I believe mtenterprises’ response (rout out damaged area & patch) is the “right” way to do it. But since a router mishap – due to my inexperience – is what caused the problem in the first place, I decided to do it one of the “less right” ways: glue mixed with sawdust. It took two days to dry enough to be sandable. Not pretty, but it worked.

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mtenterprises

812 posts in 1275 days


#12 posted 743 days ago

The only way you are going to learn is try and do. Now you will continue to look at your repair and say to yourself “I should have done it right” and one of these days you will make that repair correct.
MIKE

-- See pictures on Flickr - http://www.flickr.com/photos/44216106@N07/ And visit my Facebook page - facebook.com/MTEnterprises

View DS's profile

DS

2131 posts in 1003 days


#13 posted 743 days ago

MDF + Bondo = MFEO

-- "Hard work is not defined by the difficulty of the task as much as a person's desire to perform it.", DS251

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DaddyZ

2368 posts in 1623 days


#14 posted 743 days ago

I would have filled with epoxy

-- Pat - Worker of Wood, Collector of Tools, Father of one

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madts

1222 posts in 922 days


#15 posted 743 days ago

Durham’s rock hard water putty. This stuff is awesome.

-- Thor and Odin are still the greatest of Gods.

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