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Unread 07-08-2013, 08:02 AM   #1
Irarenovo
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Exclamation sticky vinyl!! help ;_;

I have some vinyl I used to make armor.. this is what I coated it with:

clear primer spray paint
gold spray paint
<got sticky>
coated with mod podge
<still sticky!!>

some of my other pieces are w/o the primer and they are not sticky. so I think something with the primer is bleeding up. when I first covered with mod modge the stickyness went away.. but came back overnight. the con is super close, I only have today to coat it with anything if i want it dry in time... any ideas?

Ive tried clear spray on other pieces and it usually made them stickier.. so im afraid to try it, but might do so anyway on a small piece

thanks
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Unread 07-08-2013, 08:51 AM   #2
Evil Bishounen
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Mod Podge, in my experience, has a tacky feel and that tackiness does not go away even after it dries. I usually use a water-based varnish like Minwax Polycrylic as a final top layer. The amount of flex it has will be limited, but you've already used spray paint, which has even less tolerance for flex, so that's probably moot.
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Unread 07-08-2013, 09:08 AM   #3
Irarenovo
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The pieces that are not working are long "skirt" panels.. basically 2 inch panels attached to a belt, and gauntlet pieces that are cut so there's no actual material at any joints.. so a little flexibility is needed but not too much. at least not enough that its causing the paint to crack

the stickyness is also causing the gold paint to come up a little bit if I press hard, so most of my concern is actually packing / needing to touch up too much @ the hotel / convention..

I'm willing to try that top coat though, it looks more promising than any of my ideas ! thanks
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Unread 07-08-2013, 09:18 AM   #4
verdatum
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Enamel paints (which encompass most spraypaints) often take quite awhile to fully cure. Depending on temperature and humidity, it can be as long as a week. Until then it tends to be slightly tacky.

Primer is generally designed to dry quickly, so that any category of paint may safely be applied overtop. I don't have any guess as to why this would be causing you problems.

I don't have direct experience with mod podge, but i was under the impression that it was basically a clear acrylic paint.

One possible solution would be to coat your armor with wax, such as Johnson's Paste wax. Unsurprisingly, it gives the surface a slightly waxy feeling, but it does improve the shine, and should act as a barrier from any sort of tackiness you might encounter. I can't make any promises, so you might want to test this on an inconspicuous area.

To apply, you simply brush on a thin layer with any sort of brush. Wait a moment for the solvents to evaporate, and then buff the excess by rubbing rapidly and lightly with a soft cloth (I like old t-shirts best for this). the rapid buffing slightly melts the wax and evens it out to a smooth layer. A second coat is only needed if you don't feel like you covered the entire surface.

Another emergency solution to remove tackiness is to coat the surface with talcum powder. I get mine from my local pharmacy (I've even used foot powder in a pinch). However, this can cloud the appearance of your finish and lower the gloss. You dust the powder on in excess, brush it around with a long soft bristled brush, and then whisk off the excess. If you want to risk it, you can try blotting off additional excess with an ever so slightly damp paper towel, but this risks restoring the tackiness, depending on the nature of the sticky. Oh and you should probably wear a dust mask during application.
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