This is the MATLAB code I used to produce the kinematic analysis. The values shown as a comment are the values I used to verify my hand calculations.
The materials I used were 3 1/4 inch nylon flange bearings, 3 1/4 inch diameter bolts and nuts, 2 pins with 1/4 inch diameter, and 2 plys of 12"x20"x1/8" Black Acrylic.