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Finishing MDF Edges

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Forum topic by John R. posted 11-30-2007 at 03:34 PM 1791 views 0 times favorited 6 replies Add to Favorites Watch
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John R.

59 posts in 2553 days


11-30-2007 at 03:34 PM

I was wondering if anyone could give me some tips on how to finish edges on plaques made from MDF. I had a CNC company route some oak veneered MDF sheets into plaques, on which I will be mounting antlers for customers. I have been using oak veneered plywood, but painting the edges is far too time consuming. I am attempting to make the switch to MDF (in order to avoid having to paint the edges ) and hope to be able to simply stain and polyurethane the edges the same as the veneered surfaces.

Thus far I have been using MinWax oil base stain, and have been topcoating with two coats of MinWax water base Polyurethane. Will I be able to use the water base polyurethane on the MDF edges as well? If you have any experience whatsoever in this area I would really appreciate your input.

-- John R. - Richmond, Ohio, "With God, all things are possible"


6 replies so far

View Sawdust2's profile

Sawdust2

1467 posts in 2724 days


#1 posted 11-30-2007 at 06:00 PM

You don’t indicate how the edges are shaped. If flat just glue oak veneer to the edges or, if available in your area (or by mail) there is edge tape with heat activated glue that you just iron on.

If it is a curved edge you can make a complementary mold that will hold oak veneer which you can then glue on the edge.

-- No piece is cut too short. It was meant for a smaller project.

View Peter Oxley's profile

Peter Oxley

1426 posts in 2511 days


#2 posted 11-30-2007 at 06:02 PM

You can also get edge band with pressure activated glue (as opposed to heat). Miight work with curvy edges.

-- http://www.peteroxley.com -- http://north40studios.etsy.com --

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John R.

59 posts in 2553 days


#3 posted 11-30-2007 at 07:24 PM

Well, the eges have far too many curves to put any type of banding on them. So, will the stain and polyurethane work? Any idea?

-- John R. - Richmond, Ohio, "With God, all things are possible"

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Peter Oxley

1426 posts in 2511 days


#4 posted 11-30-2007 at 07:32 PM

MDF will take stain – the edges will drink it up. I’d do some experimenting. Poly will go on okay, but the first coat may soak in a lot. I just discovered that poly works great on stone!

-- http://www.peteroxley.com -- http://north40studios.etsy.com --

View SPalm's profile

SPalm

4798 posts in 2519 days


#5 posted 11-30-2007 at 07:44 PM

MDF and water do not play together very well. I have had terrible results with latex paint if I did not seal it first. I have not tried water based poly or stain on it, but it does sound dicy.

Steve

-- -- I'm no rocket surgeon

View Dadoo's profile

Dadoo

1764 posts in 2627 days


#6 posted 12-01-2007 at 11:13 AM

I really hate MDF and someday, you will too! Try an oil based paint, stains or poly. Anything water based will cause the fibers to swell. Experiment too. Make up some samples with different coatings.

-- Bob Vila would be so proud of you!

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