Building a wing for the FT Simple Storch. At one point you need to add a trailing edge spacer made from foam board. Wanted to get the long thin strip glued flush to the edge, so I made a gluing fence. The idea is to pin down the fence, then the wing touching it. I use balsa modeling pins. When you put the glue on the spacer strip you just need to push it up against the fence, then press down until the hot glue sets. These fences some in handy for lining things up during construction.