I have spent a lot of time figuring out how I want to construct the rib jig. I looked at many methods on various websites and YouTube. Some folks were gluing the gussets and then stapling them down for clamping pressure. I experimented with the staples and glue and came to the conclusion I did not like the way the staples damaged a portion of the gusset plate. Several folks used wood clamps or metal clamps with bolts and wing nuts. I settled on that approach. I bought a 4" x 4" x 1/8" x 48" long piece of extruded aluminum tube. Cut it down to 1" wide pieces and then cut them cross ways to make two clamps. The clamps were then fabricated to have a short leg and a long leg with the short leg to bear on the gusset. Two lengths of short legs. One for 9/16" (1/2 cap strip + 1/16" ply gusset) and the other length of 5/8" to fit the flip side of the rib (gluing the opposite side) (1/2" cap + two - 1/16" gussets).
The pictures show the holes that will be used for the carriage bolts that will tighten down the clamps to the gussets.
