I'm making a sandwich board for a guy that does barbecue catering.
I've already made (at least) one mistake and used Marine Grade Plywood
(MGP?) instead of Medium Density Overlay (MDO) so it's likely the face
veneer will crack and let in water much more quickly than the plastic
on MDO. Oh well.
I have a woman who is going to do the artwork but she doesn't know
what's best for exterior signs. Right now my plan is to seal the
plywood with something, then let her do her thing with some type of oil
based paint, and then I'll *really* seal it with something (else?).
I've just started googling but figured I'd post to see if anyone in the
know has got their ears on. Initial sealer? Type of paint for the
artwork? Final UV/weatherproofing? Grassyass.
JP
I've never seen any MDO that had anything that could
be described as, "Plastic" as the outer layer. I just
used a scrap piece that had been exposed to some
rain. It was a little discolored but still worked for me.
There was a little that chipped off of one edge though
and I think it's sort of like a very thin MDF layer or some
sort of very rigid paper. Obviously water resistant
though. There's, "MDO" stamped all over the back
of it. But it sure wasn't plastic.
Bruce
[email protected] wrote:
> I've never seen any MDO that had anything that could
> be described as, "Plastic" as the outer layer. I just
> used a scrap piece that had been exposed to some
> rain. It was a little discolored but still worked for me.
> There was a little that chipped off of one edge though
> and I think it's sort of like a very thin MDF layer or some
> sort of very rigid paper. Obviously water resistant
> though. There's, "MDO" stamped all over the back
> of it. But it sure wasn't plastic.
You are correct. I did a little googling and came up with this...
MDO Plywood - The Paintable General Purpose Panel
Characteristics: An EXTERIOR type plywood with a weather-resistant
resin overlay bonded to the wood by heat and pressure. This process
fuses the molecules of the overlay with the fibres of the wood to form
a bond as strong as the wood itself. MDO has all the advantages of
regular plywood as well as additional properties. The overlay, which
has 28% resin content, resists water, weather, wear and degradation. It
has texture that paint can grip with remarkable tenacity. Paint
finishes on MDO are up to three times more durable than the same finish
applied to ordinary plywood.Ideal for Painted Signs: In many instances,
overlaid MDO plywood has proven a more durable sign material than
metal. MDO plywood is resistant to the elements with no danger of rust
or corrosion.
I wish I'd used it!
JP
J T wrote:
> Thu, May 11, 2006, 10:30am (EDT-3) [email protected] (Jay Pique)
> doeth mumble:
> I'm making a sandwich board <sniip>
>
> Hi Jay. Not back, just cruising by, looking for a post on duct
> tape that I made, and want to monitor for a day or two, and saw your
> post.
Heh. I just read that post about the wallet and I'm like
"hmmmm....maybe I'll go down and grab that new roll of the good 3M
stuff and make me a wallet". Then I'm like "hmmmm.....looks like an
awful lot of work." So I'm still here at the boob tube.
> Not to worrying. It's not like you're making something you want
> to last forever, like a pukey yard duck.
> I've done stuff with plywood that's left outside 24/7/365. Regular
> plywood worked for me. Any outdoor latex paint should work, but acrylic
> would probably be best. I think I did go over it with poly, but don't
> know if it's needed or not. Oh yeah, I didn't use a sealer, but if
> you're worried about it, you could use latex primer, or just paint it
> with a coat of latex and go from there. So far, mine's been outside for
> a number of years, with no prob. It "is" under a slight overhang so it
> only gets blown on rain - but that was not done intentionally. Rember,
> houses are painted with latex paint, and they're almost always left
> outside. No prob.
I went with alkyd primer and I'm going to have her use acrylic to
finish it. This won't be outside 24/7/365 so I figure that should last
a good long while.
You tryin' to go cold turkey on usenet entirely? Or just the wreck?
JP
Fri, May 12, 2006, 4:39am (EDT-3) [email protected] (Jay=A0Pique)
doth put out:
Tenacious D. You'll love it.
Never heard of it. I'll probably hate it.
I was meaning MY CDs. Youse got yer choice of classic rock &
roll, Scottish bagpipes, Celtic bagpipes, overtures, some Wagner, B. B.
King, regaee (?), and something else. MY usual choices are normally
bagpipes, overtures, and once in awhile the rock & roll. You know, easy
listeing music. Radio listening normally is classical, or bluegrass
when that's on.
JOAT
To assume is to make an enemy of exactitude.
- Unknown
Thu, May 11, 2006, 6:31pm (EDT-3) [email protected] (Jay=A0Pique)
doth put out:
Heh. I just read that post about the wallet and I'm like "hmmmm....maybe
I'll go down and grab that new roll of the good 3M stuff and make me a
wallet". <snip>
I went with alkyd primer and I'm going to have her use acrylic to finish
it. This won't be outside 24/7/365 so I figure that should last a good
long while.
You tryin' to go cold turkey on usenet entirely? Or just the wreck?
If my dau-in-law hadn't gotten me a new wallet awhile back, I'd
probably be using up my roll of duct tape right now, making a wallet.
Here's a pickchur of my Corporate Iggle. Made it probably 10+ years
ago. Screwed up and used varnish, it peeled after about 3 years.
Repainted it a year or two later, been out there ever since. Holding up
nicely.
http://community.webtv.net/Jakofalltrades/JOAT/media/captureD10.jpg
Still on every day, just not here. Been doin' some major research
on a coupla three projects. Been trying to get up with a concrete guy
about my shop/garage slab too. He makes appointments, and never shows.
Bummer. Finally have the loot available for it and want to get on it.
Been clearing some of the kid's excess vehicles out too, and may even be
able to start on the Dub reasonably soon. Got excellent deals on two
Buick 3.8 turbos (they need rebuilding - of course), and now pondering
if I want to go with them, or a lumpy cam instead. Decisions,
decisions, decisions. I'll have to fab a custom exhaust anyway so I
might's well go with the turbos.
Been getting out an hour or two a day usually, cruisin' in the El
Camino. Life is good. LOL C'mon down and I'll give you a ride, and
even let you pick the CD to play.
JOAT
To assume is to make an enemy of exactitude.
- Unknown
Thu, May 11, 2006, 10:30am (EDT-3) [email protected] (Jay=A0Pique)
doeth mumble:
I'm making a sandwich board <sniip>
Hi Jay. Not back, just cruising by, looking for a post on duct
tape that I made, and want to monitor for a day or two, and saw your
post.
Not to worrying. It's not like you're making something you want
to last forever, like a pukey yard duck.
I've done stuff with plywood that's left outside 24/7/365. Regular
plywood worked for me. Any outdoor latex paint should work, but acrylic
would probably be best. I think I did go over it with poly, but don't
know if it's needed or not. Oh yeah, I didn't use a sealer, but if
you're worried about it, you could use latex primer, or just paint it
with a coat of latex and go from there. So far, mine's been outside for
a number of years, with no prob. It "is" under a slight overhang so it
only gets blown on rain - but that was not done intentionally. Rember,
houses are painted with latex paint, and they're almost always left
outside. No prob.
JOAT
To assume is to make an enemy of exactitude.
- Unknown