by quarry44 » Sat May 12, 2012 6:33 am
Brown paper as a covering material has been around since adam was a lad,so I regret it's not the new greatest thing your friend has invented.also,brown paper is quite heavy,especially when glued on with pva-type glues.On the pro side,it's as cheap as chips,and much more user friendly than the old tissue and dope method.In any case,you can't use dope on a foam wing,it'll turn your wing into a pile of goop.
way back I made a Mosquito using blue urethane foam,and covered it with brown paper.It's impossible to fit the brown paper around a compound curve,you end up with a wrinkle.On the upside,once painted,the wrinkles are not noticeable,unless you know where to look.
Incidentally,I do use greaseproof paper over my plan when building a wood plane,it stops the plane being glued to the workbench:)