JHead all metal E3D v5 knock off losless mount for RigidBot

This allows mounting of JHead all metal E3D v5 knock off from ebay or aliexpress to be mounted RigidBot and use 40mm fan in front and in same time not to loose any height of the printing volume.

It requires mounting plate with bigger hole you can just print on from this design - http://www.thingiverse.com/thing:618480

FreeCad source available here - https://github.com/riahut-dot-com/ChineseJHeadHotEnd
Feel free to edit but contribute back to github.