Your color pvc foam board is finished, but… It’s still foam ! WHAT ARE WE DOING NOW???? We wanted realistic armors, weapons, LEMON PIE!
Um… How can we give to the foam an armor aspect ? THAT IS THE QUESTION.
You have several options:
My favorite, and the one I use most of the time, is WOOD GLUE
Another one that I also use: plastiDIP in spray, or in liquid pot, you only have to apply several layers (at least 3) on the foam. Once dry, you will have a smoother surface which will have a plastic aspect. Thanks to that, your paintings effects will be emphasized!
GESSO in spray (or liquid, but I prefer the spray one, not a big fan of the liquid one), applied on the foam in several layers (minimum 3), it waterproof the surface and can be sanded once dry to have a smoother aspect!
Last option is to cover foam with another material, such as PVC of a very thin thickness! A nice cunning with an impressive result which stiffen the piece.
It’s done! Now, it’s up to you to see what is the best solution for you; you only have to try ;) Then, just let yourself be guided by your own imagination thanks to the painting step, a little advice: Use acrylics, acrylics are life! *get out*
I hope that this small (huge) article would have helped you to better understand the infinite universe of foams, and now, you wanna try it ! Still, do not forget, whatever the advices people give you, or that you can find, it is always more enlighten to try things by yourself, even if you have to do it all over again! You will see, and who knows, you may find your own technique of using and crafting foams