The hinge is a lot heavier then necessary. I had some narrow aircraft piano-hinge stock. It is a bit too thin to attach directly to the dolly parts. I also had some 1 1/2 inch by 1/8 aluminum laying around, so I riveted the hinge stock to the aluminum and will bolt it onto the upper and lower dolly parts.
The tooling glass is very rough so it was smoothed with fiber-fill and is now ready to paint.