Having armour as the main part of one's costume is a heavy ordeal: time, skills, and THE WEIGHT! What if some of that could be taken off your shoulders? Literally. Wonderflex and Fosshape take less time, as you're not working a forge and shaping metal; the skill sets are similar, and plastics made to look like metal are far less taxing on the body. The folks at The Engineer Guy can show you how to get started making your own light-weight armour.