PCB-BaseFrame high rigidity type parts for PRN3D

http://bunkai.sakura.ne.jp/bunkai-wp/3d_printer/555/

PRN3D???????
???PCB????????????????????????????????????USB?????????????????????????????????
??????????????????????????????????????????????

Is PRN3D exclusive parts.
Change the orientation of the PCB-based parts of the standard, it was a compact reduce the projection part. Also jumping out of the USB connector is also less, I will salvation from the risk of damage connector.
I think that is also given role as a reinforcing parts of the body frame together, and you can be used for everyone.