After buying a Bogen/Manfrotto tripod I naturally went looking for a printable model for the quick release plate. Most of what I found looked week and more prone to flex than I would like. So I designed a stronger one. I used Mamo's Thingiverse design for initial reference, but the design is my own. https://www.thingiverse.com/thing:71604/ This plate has been tested with both Bogen 3130 and Manfrotto 128RC heads. I guess these are supposed to be the same thing, but there are some subtle differences in the ones I have. Maybe the design has changed over time. I expect the plate will fit other heads that use the RC2 system. I could not find an official spec for the correct screw length, so I made a few variants. Obviously you want good thread engagement, but it is equally important that you don't bottom out the screw. Note that all versions use 1/2" long 1/4-20 screws. The flathead is the standard 82 degree type. With the screws I have, I measure the exposed thread length. flatehead.stl - 5.2 mm panhead-b.stl - 5.8 mm panhead-a.stl is 1 mm shorter, and meant to be used with a TPU spacer, anti_slip.stl.