I like NickRimmer's design, especially the tensioner, but I want to keep things simple and exchangeable, so I'm using the standard E3D hotend cooler fan instead and I also want to use standard D-BOT filament cooler (or some other compatible one). I also like to have min & max endstops on all axes, because I had already bad experiences with missing max endstops.
- additional holes for MAX-endstop
- removed the hotend fan
- added the standard D-BOT mount holes for filament cooling (30mm horizontal distance)
Update: added a long hole version.