A1 PTFE Extension Adapter Connection

This is how I connect my dry box to my A1 bowden connection. It allows me to maintain the swivel the A1 connector for PTFE tubes has. I remixed the great designs by Golub and Ziemniaczenka. I used the best aspect of both. Golub's original model required a ziptie for added security, but was great in all other regards. Ziemniaczenka had a model with a fantastic connection for the A1 Bowden connection meaning no additional zip tie or strap would be needed. I added supports for the bottom where the teeth for the tube goes. This removed easily in my testing of Bambu filament and is a small support for two overhangs. It may take a few twists of the nuts to get the threads primed. For the connection in PLA the middle secure tab may snap off if you are not careful to attach. Using PETG for better flex could help or slide it on like this image from Ziemniaczenka's original model. Even without this tab, the hold is very secure it is not needed.