Manfrotto 501PL-compatible quick release plate

I wanted to conveniently be able to swap a Kinect and a DSLR on Manfrotto tripod with a 701HDV head on it, so I made a quick release plate compatible with the 501PL plate that I have. The OpenSCAD file has parameters to adjust the thickness and length. The default values, which the STL was generated with, result in a plate the same size as a real 501PL.