DIY 3D-printer mounting kit with simple belt fastener

These are the parts I designed specifically for my DIY printer in order to almost double the printing range, compared to my previous setup made out of steel. Maybe it can be of help for others as well or at least give an idea. I have no experience at all in CATIA, so it is way far from being perfect, but as you can see at the pictures, it does a nice job atm.

It is actually very comfortable and simple to fasten a 5mm belt accordingly to the required tension just by inserting it into the slit