CR-X Direct Drive Mod

thingiverse

IMPORTANT... IF USING CURA ULTIMAKER OR ANY OTHER SLICER THAT USES A "QUICK WIPE" FUNCTION IN THE G-CODE, PLEASE REMOVE IT OR WHEN THE NOZZLE PRIMES THE FILAMENT OR IT WILL INSTANTLY SNAP THE TPU INSIDE THE FEEDER. Remove this line from Cura Ultimaker (Line 12) G1 F5000 X180 ;quick wipe I wanted to be able to print TPU but didn't want to fork out $700 for a direct drive printer, so fueled by my cheapskate mindset I created this for one of my CR-X printers, it moves the 2nd extruder/feeder directly above the hotend. Because of the terrible way I designed this because I wanted the weight to be distributed evenly you require an X limiter extender which I've provided, only limits the x axis by a few mill. Also the Z axis will be limited by around 72mm less but realistically if you're doing this mod so you can do TPU prints I doubt you'd be doing 400mm high prints but I guess I've been surprised by lesser things before so I might be the weird one here. Because of the inconsistencies in different stepper motor mount screw sizes and angles, you'll have to angle and line up the hotend tube with the filament feeder and drill out (or what i did, use a soldering iron to melt the PLA lol) holes for the stepper motor. This still uses a very small amount of the bowden tube so you'll have to cut it to length.