Building the fin, or vertical stabilizer, is quite easy to do. The fin is made from 1/16" x 1/16" balsa and since there are no ribs in the fin, assembly is quite easy to perform. The method used here is the same as what was done previously with the wing and stab. Pins are used to hold the balsa into place, then the superglue and accelerator are applied. (Make sure that you have rubbed some wax on the plan before pinning and gluing the wood or it may glue itself to the plan.)