Folgertech FT-5/FT-6 SOLID Bowden (+dual) extruder mount

thingiverse

Consider this a work in progress, but I need more feedback from installers to make everything right because I don't own a Bowden printer to test it out on. - Edit 1: Added a second mount file to support the 24mm center-to-center mounting holes on the dual bowden setup Anybody with an FT-5 or FT-6 knows how bad the original ACM extruder mount is. This piece was created to give more solid mounting to the Extruder assembly on direct-drive Folgertech FT series printers. In addition, it corrects some major problems with the original design. Specifically, it mounts the gantry board with plastic clips instead of metal nuts/bolts. The bottom left nut carries a chassis ground and overlaps an unpadded hot circuit on the board. If/when it arcs, it takes out your main board, all of your stepper drivers, and your orange/rasp pi if you have one installed. I've confirmed at least one other case of this happening, so check your printer! This extruder mount also gives more surface area for the Y homing switch to contact. The entire assembly bolts together with M4 and M3 bolts, including the belt, which easily secures with M3 bolts instead of zip ties. Print this part with 0.2mm layer height (including bottom layer) at 8 top and bottom layers and 4 layer thick walls at a 25% infill. The design is meant for a slightly higher Y belt, accommodating stepper motor dampers and giving more space for a new Y belt tensioner design. You can raise the idler gear a little with a longer bolt and spacer and flip the pulley on the stepper if you don't want to do this for yourself and prefer the original equipment. Tips are especially appreciated for parts like this, as they take a lot of work!