E6D V6 OpenBuilds plate mount

I have hade a hard time to finde a proper mount for my upgraded CR-8 oversize, as I have extended the build volume for 500x500x500. I could fine diffrent once but thet where either to small to deal with the "stress" or they have just don't have space for wheel screw when using the small open builds plate for 20x20 V-slots rails.

I have tried to make it generic as possible where you don't need to disassembly the extruder to doe maintains on the V-slot wheels

This is version 1, and there is