AMS Curved Exit Tube

This is an in-place curvature adapter for the AMS exit PFTE tube. This ensure that the PTFE tube follows a path of least resistance as it feeds to the printer, generally quite useful especially if your AMS is located on the top of your printer. In addition to the AMS exit path, there are also additional (smaller) curved connectors provided that applies to various other feeding locations.

This model was primarily born out of frustration with other solutions both in terms of fitting (I have clumsy hands and certainly damaged a PTFE tube on at least one attempt) and final removal (due to moving AMS issues I had to cut away one curved connector in the past, destroying it in the process).

With these frustrations in mind the goals here are simple -

- Ensure that a correct curvature is provided, adding less stress to the AMS

- Guide the PTFE tubes, don't constrain them
- Make a simple-to-fit model, ensuring that we don't place stress on already vulnerable components
- Make a simple-to-remove model, once again ensuring that we can clip/unclip without hassle

Based on the above points this design is ends up as a simple press-fit adapter. No stress in adding it, no further stress when removing it. If you believe the AMS exit tube has undue stress or abnormal curvatures that results in filament feeding issues, then this model may be worth a look.

Notes on printing: At least in my case the brim in the default model is needed to ensure adhesion to a textured plate. YMMV with a smooth plate, so feel free to adjust if you don't want brim-cleanup at the end. Profiles provided -

- Exit Piece: This only applies to the exit of the AMS (based on my frustrations above)

- Multi Piece: This applies to the exit of the AMS (large, 145 degrees, same as the previous), the location before the AMS buffer (medium, 90 degrees, no other printed fittings needed) and before the entry to the printer (small, 75 degrees, useful for some cases where additional connectors are used).

Notes on the models: In addition to the .stl models and the .3mf files, I'm also sharing the original .scad model file - this requires BOSL2.