Edge Treatment For Exterior MDO

 
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Old 05-04-2012, 03:26 PM   #1
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Edge Treatment For Exterior MDO


We are building an enclosure for an outdoor TV (TV IS WATERPROOF SO DON'T GET SIDETRACKED INTO MAKING THIS WEATHERTIGHT).

I'm going to use 3/4" MDO for every part of this, including two doors. Is there a way to treat the edges to hide the grain of the plywood? I can't imagine traditional edge banding holding up.

I know some sign guys use spackle on the edges.

Is there an "accepted" way of doing this?

Thanks
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Old 05-04-2012, 03:27 PM   #2
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Re: Edge Treatment For Exterior MDO


Miter. And glue.

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Old 05-04-2012, 04:05 PM   #3
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Re: Edge Treatment For Exterior MDO


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Originally Posted by bodean614 View Post
Miter. And glue.
Not possible on a door.
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Old 05-04-2012, 04:07 PM   #4
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Re: Edge Treatment For Exterior MDO


Then I would sand smooth seal with a exterior sealer and use a good primer.
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Old 05-04-2012, 04:34 PM   #5
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Re: Edge Treatment For Exterior MDO


http://images.meredith.com/wood/imag...er_bits_bg.jpg

Hope this post works - I found this picture online but have used this technique many times - these router bits used in conjunction with some mahogany or spanish cedar stock will make perfect painted exterior door edges with MDO.
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Old 05-04-2012, 04:36 PM   #6
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Re: Edge Treatment For Exterior MDO


Exterior MDF out of the question? I have had a test piece painted for almost 2 years now under the drip edge of my shop, and in direct sunlight with zero issues so far. Edge treatment is not an issue. Stays flat. I had a scrap piece in water for 2 weeks and it absorbed about 1/32" untreated.
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Old 05-04-2012, 07:40 PM   #7
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Re: Edge Treatment For Exterior MDO


Quote:
Originally Posted by Greg Di View Post
We are building an enclosure for an outdoor TV (TV IS WATERPROOF SO DON'T GET SIDETRACKED INTO MAKING THIS WEATHERTIGHT).

I'm going to use 3/4" MDO for every part of this, including two doors. Is there a way to treat the edges to hide the grain of the plywood? I can't imagine traditional edge banding holding up.

I know some sign guys use spackle on the edges.

Is there an "accepted" way of doing this?

Thanks
You mention spackle, so I am assuming painted finish? If so, exterior MDO. If not, as dontgetinmyway suggests... or Burgess bits, but either one, the veneer will be fragile at the outside because of variances in the ply when running the bit, so remember to leave it a hair proud for 1/6" rounding of the corner to blend the veneer and wood... Lots of glue...

Best of luck... 8^)

Last edited by KAP; 05-04-2012 at 07:43 PM.
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Old 05-04-2012, 11:08 PM   #8
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Re: Edge Treatment For Exterior MDO


Don't know what the budget is, but we did an outdoor kitchen out of King Starboard. That's used on boats all the time. Pricey stuff, but if it's just one tv-sized cabinet... Stuff's bullet-proof in terms of harsh elements.

They also have some color cores - with both outside 1/8" one color and a contrasting core.

Kent's exterior MDF idea is likely far cheaper/sheet. I've never used the stuff, but the PM on a neighboring job site "tested" it by throwing a sheet in a big muddy puddle at the front of a job site. Was there for a couple of weeks and served as a makeshift walkway through the muck.

Was toast at the end - but more from the back and forth of work boots/occasional tires than the elements. I think everyone was pretty amazed at it's resilience. Would use it in the future.

For MDO, on a small cabinet, I suppose I'd hardwood edge it. A bit of a time-sucker, but certainly better than edgebanding.

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