MDF Questions and Search - Woodworking Talk - Woodworkers Forum
 
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post #1 of 6 Old 06-09-2012, 02:51 AM Thread Starter
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MDF Questions and Search

Just want to say hi. Just registered here to ask a few questions if you don't mind.

First off, I am looking for a source of thick MDF in CT (1"+) I am working on a small project where it is necessary. Northwest CT (Litchfield area) would be nice, but I'm willing to take a drive if needed.

Second question. If I can't get my hands on 1"+ MDF, how would you guys recommend joining two pieces together? It is entirely structural, so looks mean nothing here. Bolts wouldn't even need to be countersunk.

Thanks in advance!
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post #2 of 6 Old 06-09-2012, 07:57 AM
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While I don't live in CT, around here (Chicago) you can only get that from wholesalers or as a special order from a hardwood lumber and sheet good supplier. It's really heavy so it would probably be easier to just double up two 1/2" sheets. Glue and screws or glue and brads or just glue and clamps would all work depending on the size of your project. Definitely countersink screws though, at least near the edge to prevent splitting.
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post #3 of 6 Old 06-09-2012, 09:04 AM
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There are also differing densities of MDF. It has to do with particle size. Some is nearly like sawdust and is high density. It doesn't chip as easy.

I would also join 2, 1/2" layers.Liberally glue em and clamp/nail/countersunk screw.
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post #4 of 6 Old 06-09-2012, 09:11 AM
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Welcome to the forum.

You can often get it at a building supply place but it's expensive as they need to special order. If you are by chance looking to replace the original table on your Craftsman radial arm saw (a common application of 1" MDF) most of us have gone with 3/4" or some other variation. Lots of info on the forum if you search.
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post #5 of 6 Old 06-09-2012, 09:24 AM
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There is a Frank Paxton Lumber Company in the Manchester area that will have anything you need. They are a large nationwide hardwood distributor. If you go the route of gluing two sheets together to make the 1" I would recommend using a powder resin glue to do it. I worked for a guy one time that glued two sheets of 1/4" plywood together by laying them on a work bench and spreading wood glue over the entire surface and laying the other sheet over it. He then laid another sheet of 3/4 over the top of it and weighted it down with hundreds of pounds of 5 gallon paint buckets. He let it set over the weekend and it seem to work great until he started cutting the sheet into parts and found in the center the glue never dried. We ended up having to re-assemble all the pieces again so it could finish drying. Had he used resin glue it would have dried all the way across the panel. In your case mdf has a lot of formaldehyde on the surface of the sheet. I would sand the entire surface of each sheet with an orbital sander with 80X paper before attempting to glue it.
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post #6 of 6 Old 06-09-2012, 09:26 AM
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If you're unable to find the 1", you might try using contact cement and glue two 1/2" pieces. A sheet of 1" will give you a hernia...DAMHIK.

Joe

"If I agreed with you, then we'd both be wrong!"
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