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Old 17th January 2016, 01:40 PM   #1
rock12 is offline rock12  United States
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Default foamcore

I am looking for a paint that will not peel the paper or bend the foam board
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Old 17th January 2016, 02:12 PM   #2
adason is offline adason  United States
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me too...
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Old 17th January 2016, 03:33 PM   #3
xrk971 is online now xrk971  United States
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Use non water based paint. Spray on Krylon etc should work. The moisture in water based paints causes differential peeling swelling.

Be careful not to use too much on exposed foam edges as solvent may melt foam. Light multiple coats rather than single heavy coat.
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Old 17th January 2016, 04:19 PM   #4
Hikari1 is offline Hikari1  United States
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You may want to look for "gator board" instead of foam core. It's basically foam core with a thin plastic sheet laminated to the sides instead of paper. It's more expensive but comes in a variety of colors, doesn't bend as easily and probably would be safer to paint.
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Old 17th January 2016, 05:18 PM   #5
GM is offline GM  United States
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Back in the '50-'70s I built train, slotcar track scenery, buildings, etc., using latex paint until I learned about the special coatings developed for painting flowers. Latex is fine as long as you spray both sides, but the flower paint works great on just one side. Don't recall the brand though. Note that I used an airbrush system for all this except for really large areas, then it was a Binks touch-up gun.

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Old 17th January 2016, 05:30 PM   #6
Bare is offline Bare  Canada
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Really?
Stop buying using 1$ store Foam board
It's paper is not even glued onto the foam substrate.
Prized By 'frugal' RC airplane types, entirely because the paper literally falls off, allowing access to cheap foam..
Not surprisingly even the foam is low grade... soft /rubbery and of uneven thickness, clearly the disadvantages of 'too cheap'
Suggest buying Decent quality foam core.
Starting with even Michaels cheap "elmers" brand, to Graphic Arts supply pricey/quality Bienfang brand foam core.
Paper won't come off that.. without a chisel

Last edited by Bare; 17th January 2016 at 05:32 PM.
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Old 17th January 2016, 05:43 PM   #7
xrk971 is online now xrk971  United States
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Elmer's is certainly sturdier but wet paint might still warp it. The paper on the dollar store does eventually peel off. Especially the black ones. The whites are a bit better. But you can't beat $1.
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Old 17th January 2016, 05:45 PM   #8
GM is offline GM  United States
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Quote:
Originally Posted by Bare View Post
Starting with even Michaels cheap "elmers" brand
Seriously?! There's cheaper, worse? Regardless, latex paint on both sides will hold it all together, not to mention seal any poor glue joints.

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Old 17th January 2016, 08:05 PM   #9
Jerms is offline Jerms  United Kingdom
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I guess my idea of wallpapering it won't work then.

Though maybe...
- Masking tape all edges and exposed core, then use spray glue, the floor tiling stuff.
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Old 17th January 2016, 08:11 PM   #10
xrk971 is online now xrk971  United States
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Self adhesive contact wall paper works.

Re Gatorboard: that stuff is really strong and there is even a version with fiberboard sheathing, all are too tough to cut with a razor and require a tablesaw so negates the whole "kitchen table" construction method which makes FC so popular.
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