Came across this online while researching how to best scratch build display wall backdrops for a few customs:
Very cool, and adaptable for 6" scale figures too if a larger tube roll was used. Looks like self-adhesive foam paper was used as well, combined with a layering technique to produce a very Iron Man-esk armor display.
Custom Props, Toys and Action Figures by Blayne Design Sculpting Painting 3D Printing: Durable Handmade Items for Collectors and Film