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07 Nov 2011 - 09:2773901
Working with Polystyrene
I have a polysytrene shape, i need to make it look metallic.

As you can see from my darker than black mask, I'm no stranger to getting smooth surfaces. However this is a medium I've not used before.

I have car body filler primer, it's very thick primer. Will that suffice as a base to smooth things out for the top layer or will I need to put something on the polystyrene first?

08 Nov 2011 - 14:1373969
I used PVA glue as a primer just to fill the gaps in the polystyrene on a previous cosplay (no pics up unfortunately) and that worked OK with a few layers so I'd say the filler would work even better. You might have to use PVA afterwards on top of paint to prevent any paint from flaking off. I've heard other people have used hairspray instead? :S

I found this page useful http://researchanalyst.hubpages.com/hub/Cosplay-Armor and this one http://amethyst-angel.com/armortutorial/armormaking_construction.html although the second link doesn't deal specifically with polystyrene.

08 Nov 2011 - 17:3073982
I had thought that would be the thing to do, with PVA. Although I'm not sure how good it is when giving smooth coats when i think about brushing it on.

Maybe I could dip the entire piece in a pva mix, over and over so it dries uniform and smooth?

08 Nov 2011 - 18:5773988
Water it down a little bit, brush it on and apply lots of coats - you will get a nice smooth finish that can be painted with most anything.

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08 Nov 2011 - 19:4673990
I've only worked with polystyrene once but I found it was possible to sand it, but you have to be gentle and go in only one direction with the sand paper. Don't forget you face mask if you do this!

I then painted several layers of PVA glue on to it which hid the texture well enough before I painted it.

Somehow it's reassuring knowing I'm not the only one pretending to be normal
09 Nov 2011 - 10:2974012
Thanks all, I'll press on knowing this :3

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