I recently got a P1S Combo and - given the fact that Several filaments should not be printed with the AMS (such as TPU or filaments on cardboard spools) - first thing I added was the Smoothy splitter (check it out - really a great addition to this setup: https://makerworld.com/en/models/18174?from=search#profileId-17021). However, I didn't like to fumble the filament into the PTFE tube, so I added a funnel to the PTFE tube (https://makerworld.com/en/models/66235#profileId-69487). This worked quite fine, but the PTFE tube used to get behind the printer, so I had to “fish” it back to the front in order to put my filament into it.

So I came up with this design. Since it is attached to the side of the P1s (which is not magnetic), I use double sided sticky tape to attach it.

Additionally you will need

1 x PC4-M6 (I used the one with a blue ring).

Best to print it with support and funnel side down - otherwise the support will mess up the threads.