K1 Max Top Spool Holder

The bowden system was not working great with TPU, so I modeled a holder that utilizes the filament rod that came with the machine. This is best printed in PETG for strength, but PLA might work if printed at higher infills.

Prints without supports, depending on how well your printer can do overhangs.

Parts not printed:
M3 8mm long socket head screws (QTY: 2)
K1 series filament holder rod

Print this doohickey
Remove glass lid
Remove two M3 screws from the side glass panel. (If your model is the K1/K1c, only one hole may line up. It might still work, but with less stability.)
Place the doohickey on the frame and fasten to the side w/ the screws.
Leave your bowden tube disconnected from the print head, with enough old filament to override the sensor, and allow the TPU to be pulled in from the top.

Edit: Two new parts have been added to prevent the filament from unrolling and falling into the printer. I printed these in blue glow in the dark PLA (see images). They slot into each other and do not require hardware. I didn't need this with TPU, but it may be useful if you decide to use this for rigid filaments.