Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4517177.

This clips on to the stock CR10-S filament sensor, and allows a PTFE tube coupler to screw in to the input side. You can find the coupler here: https://www.thingiverse.com/thing:2755127

This serves a couple of purposes. Primarily, it prevents wear to the filament sensor housing by guiding the path of the filament with a length of PTFE tube on the input. It also helps reduce air exposure to humidity sensitive filaments like PETG and Nylon by keeping the filament enclosed on its way from your dry box.

This object was made in Tinkercad. Edit it online https://www.tinkercad.com/things/3XxlCKJPTjA