I have been doing a lot of experimenting with electronics and recently found that DIN Rails can be very handy... and, I just got a new 3D printer, so I had to do something creative. This is version 1.3 which has the following improvements. 1) The nut holes have been slightly resized to fit better. 2) I rounded all the edges, which makes it feel better... less sharp edges. It is fairly hollow, very light. I included the AutoCAD file in case you want to tinker with it. If you make a better version, let me know!