It's not often that I luck out and get a free tool, even if it is tech at its lowest. This is a formed cardboard corner protector from a shipping stack of plywood, available at most construction site dumpsters. I decided to line it with strip sandpaper and use it to shape a log of balsa into a straight leading edge on a Sig Banshee. The self adhesive paper pushes right into the radius of the cardboard, which by the way is straight and true because of the stiffness of the laminated paper it is formed from. This edge protector was simply lain on the bench and the wing is driven in long back and forth strokes, taking about five minutes of effort for a shaped LE.

Thanks, Frank!  We need more tips like this.

Mongo

And I've been looking at those things for years knowing there is some use for those things!

Good move!


w.