Join two TPFE tubes together with buffer space in the middle for retractions. Useful to place before the long tube to a filament dryer, for example, so the extruder doesn't have to push the filament all the way back to the spool.

I created this to make it easier to print directly from the Creality Space Pi filament dryer with my Prusa Mini.

Use 2x PC4-M6 fittings

I printed in PETG. Includes mounting holes. I see the filament going back into the tube towards the dryer (there must be some tension in the filament / tube) but I don't see any “backfeeding” into the dryer itself at the dryer end of the tube.

TODO

• Snap fit cover to minimize moisture entry when not printing