I use single spools with my A1 mini and usually print with filament directly from the dryer. My dryers have PTFE tubing, so I created this small bracket to hold a double 4mm pneumatic connector which I use to connect the A1's Bowden tube to the dryers PTFE tubing. This bracket clips into the same spot as the original on the A1 and A1 Mini.

I printed using PETG for strength. Supports are required and part orientation on the build plate should be to print the strongest part.

The double 4mm pneumatic connector I used which has a 7mm center diameter… https://www.amazon.com/gp/product/B09NNCBPSH/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1