Using the Adjusto-Jig.

I've had this tool for over 20 years. I've probably built 100 wings on it.I finally figured out the best way to build a wing on it. I set up the template for drilling the jig rod holes so that I can put the top and bottom leading edge sheeting on, the top rib cap strips and the top center sheeting before removing the wing from the jig. This kit, the Brodak Cardinal, is set up with their own jig rod holes but that makes you build one half of the wing at a time and I'd rather build the whole wing in one shot. The Adjusto-Jig lets me do that but with smaller jig rod holes. In order to set the holes so that I can assemble most of the wing in the jig I have to tape most of the knock-outs in place and drill the rod holes in the knock outs. I install shear webs between the spars and between the trailing edge sheeting while in the jig. I also carve and sand the leading edge to shape in the jig using the "shoe shine" sanding method. Then I make a radius gage and check that the leading edge is as close to the same along the entire wing as possible. I always use a suspended bellcrank on my planes for max strength. The Cardinal has two center ribs close together. The jig is open in the center area so I used the provided thingy and glued it to a 3/8 balse piece and used that to align the center ribs. The jig rods passed over the balse and through the center ribs.