I thought about a simple modification to easily detach the connectors from the printer (regardless of whether it's an x1c or other closed printers), and this idea came to me. I used a 0.2 nozzle and the Snulu+ PLA profile, and I used PLA. A small neodymium magnet was added to the model to install it as shown in the photo. Also, before testing it (I did a multicolor print and it had no issues with filament changes), I added some Teflon to the PC4-M6 threads.