Yeah, I was suspecting this would have to happen soon. But I think it's a good thing. Like I've said before there will always be a place for scratchbuilt armor, and no reason the two types can't co-exist.
umm how is that mold making i dont get it? i though mold was like making a mold and casting armor, not just making one from scratch like monstermaker but having it made out of cardboard. Though cardboard is paper and the forum is pepakura and PAPER so i guess it should go in here if its cardboard.
Mold materials are actually pretty heavy, and you're going to be putting some force on this as you shift it around. Besides, The cardboard would warp under the weight of the rubber and mother mold shell leaving you with a warped casting.
Best to back it with fiberglass or expanding foam.