About this 3D model

This is a derivative of two extruders, the original YRUDS MK7 and the derivative of the YRUDS for a 3DR bowden in 3mm. I wanted one that used an MK7 hobbed gear and also would work with 1.75mm filament in a bowden configuration. I also added a mount for a 40mm fan to cool the motor just in case as I was printing this in PLA. None existed that I could see so I made this one. It should mount easily on most any extrusion but, if not I'm sure you could get creative for a mount.