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Post by dragon722 on Jul 26, 2014 6:17:19 GMT
Can you spray paint this stuff if you leave the paper on or will the spray paint destroy/eat it? or warp the hell outta it? cut a crap load of pieces and do not want to waste any of the tiles if someone already has tried this lol I am wondering. Backup plan is to cover it in scrapbooking paper designs and cut /design/flock around that if it will not work. Any advice would be appreciated
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Post by curufin on Jul 26, 2014 11:03:52 GMT
I make all my walls out of foamcore. I spray paint an undercoat with black and then spray on light grey after the black dries. I don't have a problem with it eating paper. Occasionally, a corner of the paper will start to peel off, but a dab of white glue and you are back in business. I don't have any problems with warping, but my pieces are small.
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Post by adamantinedragon on Jul 26, 2014 15:32:07 GMT
I've made several substantial terrain elements using foam core posterboard. Here are my experiences:
1. Dollar store foam core posterboard is more prone to warping and paper separation than the foam core posterboard you buy at Michaels or Hobby Lobby. 2. Even the "good" foam core will warp, but the warping of the good stuff is slight enough that small tiles aren't affected much. 1 foot x 1 foot will start to show some warping problems if you don't take steps to keep it from warping. 3. If you remove the paper to use the foam as a surface to texture, lots of spray paint products will cause pitting and melting of the foam core. 4. You can take care of #3 if you have an air brush and use water based acrylic paiints. 5. In comparison, you can also have warping even with cardboard. It is best to use as little paint as necessary to avoid warping with any absorbent material.
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Post by dragon722 on Jul 26, 2014 16:12:25 GMT
I've made several substantial terrain elements using foam core posterboard. Here are my experiences: 1. Dollar store foam core posterboard is more prone to warping and paper separation than the foam core posterboard you buy at Michaels or Hobby Lobby. 2. Even the "good" foam core will warp, but the warping of the good stuff is slight enough that small tiles aren't affected much. 1 foot x 1 foot will start to show some warping problems if you don't take steps to keep it from warping. 3. If you remove the paper to use the foam as a surface to texture, lots of spray paint products will cause pitting and melting of the foam core. 4. You can take care of #3 if you have an air brush and use water based acrylic paiints. 5. In comparison, you can also have warping even with cardboard. It is best to use as little paint as necessary to avoid warping with any absorbent material. Ok thanks guys
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Post by Jason on Jul 26, 2014 18:53:47 GMT
What the kind gentlemen above have stated is all true.... Haha!!
Also, to help prevent warping glue some popsicle sticks flat against the bottom. It helps to keep it straight.
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Post by dragon722 on Jul 27, 2014 4:51:04 GMT
I have some fiber boards that they use in trailers that I was going to cut down and graft to the bottom of all the pieces, but it is just a thought. I cut alot of pieces and shapes as shapes appeared in my mind lol. I think I will go get about $10 more of this board since it takes less time to cut then cardboard and working with it so far is easier too.
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Post by sgtslag on Jul 28, 2014 13:15:22 GMT
There are acrylic spray paints available at hobby and paint stores. You might want to check them out. While they won't melt your foam boards, they can still cause warping because of the moisture. Cheers!
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Post by dragon722 on Jul 28, 2014 14:27:13 GMT
So went the route of gluestick to put the scrapbook paper on top of the foamboard and it still warped. I will need to find something to graft it too to keep it flat. have not added the side walls yet so do not know if this will fix the problem when it is added, but I thought the posterboard was an awesome idea that was even faster to produce then the cardboard tiles. guess I will just have to experiment.
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Post by sgtslag on Jul 28, 2014 14:31:03 GMT
Have you tried setting a book on top, while the glue dries? I would cover it with parchment/baking paper, to protect the book from glue, then lay the book on top, and let it dry overnight, or at least for several hours; the parchment/baking paper will not adhere to the glue, but it will allow moisture to escape -- use a book with a water-proof cover. Wax paper will tend to hold moisture within, causing a much longer cure time, but it will prevent moisture from getting to the book's cover material. These should hold it flat, while the glue dries. Cheers!
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Post by dragon722 on Jul 28, 2014 14:32:10 GMT
Have you tried setting a book on top, while the glue dries? I would cover it with parchment/baking paper, to protect the book from glue, then lay the book on top, and let it dry overnight, or at least for several hours; the parchment/baking paper will not adhere to the glue, but it will allow moisture to escape -- wax paper will tend to hold moisture within, causing a much longer cure time. This should hold it flat, while the glue dries. Cheers! I will try this. thanks sir
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Post by skunkape on Jul 28, 2014 17:30:48 GMT
I have successfully spray painted foamcore and foam without eating the foam! The trick is to not use cheap paint and to spray it far enough away that the accelerant used in the paint doesn't hit the foam. A spray paint can label that I read recently said to spray from 18 inches away from the foam!
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Post by DMNate on Jul 28, 2014 17:49:59 GMT
Another option, should you be in a position where you really need to use foamcore and wish to not have paper on it, is to cover all the foam in PVA glue before spraying it. It takes more time, but sometimes you just gotta have that spray paint look. PVA glue pretty much fixes everything.
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Post by Pagemistress on Aug 1, 2014 19:01:43 GMT
You can use spray adhesive too for foamcore (like 77). Mask off parts you don't want to have adhesive and spray an even layer. Then take your scrapbook paper and slowly place one end on the sprayed board. Gently roll it until it covers the area you want. Use a straight edged piece of cardboard as a smoother. This stuff smells, so let it dry in the garage before taking it inside. You can also do it in reverse...spray your paper then cut the foamcore around it after it's mounted.
For smaller paper pieces, use a glue runner. These are sold in the scrapbook section of craft stores or Walmart. They roll on a thin line of adhesive that has no moisture. I do a line around the perimeter and an x through the middle.
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