I located an older video with a gentleman in the process of building this jig long before the "woodfather" came up with his version (which matched the older gentleman's jig). The older video gave dimensions in which I was able to build my own and not pay the woodfather for his second hand version. I also used my 3D printer to make the template blocks in various sizes (1/4",3/8" and 1/2"). Really helped with consistency. I was also able to create attachable pieces to allow me to create joint work on other panels that are different than the standard 90 degree angle.