Since I already forgot the first prototype on the Metro a new version weill be made. I have some improvements that I will make to the new one. I was at an leather workshop yesterday. It lasted for about 1.30 hours and showed the different techniques used to make a belt. One of the tools used was a leather edge cutter:

This will make shure that my edges are smooth and nice on the next version. I also consider making the "flaps" (leather edges that cover the short side of the wooden box) Symetrical. Maybe even putting two bolts on each side so it stays put.