Wing Rib Alignment Tool

thingiverse

Simple jigs to hold balsa ribs square to the building table for a model airplane. 5 sizes (1/16, 3/32, 1/8, 3/16 and 1/4" modelled). The slots give a snug fit as modelled, I would suggest a test print to get the fit you want/need (you can always scale up/down across the slot direction). Still learning the CAD side (the corner triangles are a bit off ...), but the slot geometry should be good. Left them relatively thin (so I could mail them if needed), you could scale them up in the Z direction in your slicer if you want them thicker. I may model some slightly angled holes to allow pinning of the base to the building table but I use them to set the angle while I pin the rib itself down. You could always drill some holes. Added a 5.5 degree / 3/32" thick jig to set angle of center rib on my Q-Tee build (https://aerofred.com/details.php?image_id=83488) Will add some taller versions as well as wider feet with provisions for magnets (for building on a steel surface)