Hey! I have an older Taz 6 3D printer, and recently had my belt tensioners break on the X axis mount assembly. After some looking around, I couldn't find an STL similar to the original, so I whipped one up! I kept it close to the original, minus the female screw inserts as I didn't have any, and installed everything with slightly longer screws and nuts. One tip I'd recommend is predrilling the holes and tapering the tops (depending on the screws being used) to provide a flush fit against the Extruder, when installed. Hopefully I'll return soon to add optional nut inserts and anything else I notice as I begin reusing my Taz 6 with this mount. Hope this helps!