This is my method of stripping the paper off the foam board found at most hobby stores and dollar stores in Canada and the USA. This is the best solution to mega cheap super light builds I have found, and contrary to common belief, its quite easy.
by ItsJustNick
by Paint with Isha
by Awesome Builds
by How to Draw and Paint
by Cruz Munoz
by Thao Handmade
by Art and Sketch