Flat multi-channel! 2 models: 9-way (8-in, 1-out) and 17-way (16-in, 1-out)!

This is the 9-way (8-in, 1-out) for eight channels, and the 17-way (16-in, 1-out) for 16 channels!

In my opinion, Bambu Lab's multi-color printing now has an overwhelming advantage in the number of usable colors compared to other brands; mere four-color printing no longer threatens Bambu Lab! Bambu Lab can support up to 4 AMS units, allowing for 16-color printing, which current 4-color printers cannot achieve. After all, no one who has moved to multi-color automatic printing would still want to stand by the printer and manually change filament!

However, I searched for many multi-way connectors online and within MakerWorld, and found them difficult to use!

Either they use pneumatic fittings or Bowden connectors, and a five-way connector would be about the same size as mine. Plus, for eight colors, you'd need to use two, dangling and shaking on the extruder, making you worry they'll fall off or tangle and jam the machine; or there's a type of connector that roughly connects the PTFE cables from both sides, with a very small diameter for firmness. If there's even a little shrinkage from printing, it won't fit, and if you scale up the print, it'll be too loose. Anyway, I tried a few and ended up bending the tubes without getting them in!

When I first used BMCU, I made a five-way anti-explosion head that used set screws to fix the PTFE cable. I drew a simple 9-way, which was the prototype for this project, feasible but not easy to use! After a week of thinking and designing, I got this current result. I am personally using the 8-way designed for the A series, and have not encountered any issues with this multi-way connector!

This model was casually made after designing the multi-way for the A series. Its appearance was designed by referencing images from the P series, but its dimensions and functionality have not been verified. I hope experts can test it and provide suggestions and criticisms! I will make improvements!

These two multi-way connectors are not perfectly axially symmetrical like the A-series, but are left-right symmetrical with the outlet skewed to one side. They can be flatly attached to the enclosure's outer shell. On the flat side, I've pulled out a 5mm side panel component that can be modified as needed (e.g., for magnetic attachment, clips, hanging holes). If not needed, it can be deleted directly without affecting the main function!

Since I don't own a P-series machine myself, I can only provide these parameters as a starting point, hoping to elicit better ideas!

Here are the recommended hardware components:

• For set screws, buy flat-head ones. If you have M3*4 or M3*5 machine screws, you can try using them. Using set screws will be more aesthetically pleasing, with very minimal protrusion. Pointed set screws can be used, but I don't recommend them because installation is difficult: if tightened too much, the pointed tip will damage the PTFE cable, and it won't recover after loosening. However, flat-head screws allow for rebound recovery. It's recommended to test the appropriate screw depth with a scrap tube before installation; too loose and it will fall off, too tight and the filament might not pass through.
  
  I bought a hundred of these set screws on Taobao for 1.25 meters. The cost is very low!

If you have any problems or suggestions during use, please let me know in the comments! I will make improvements to the design once I see them!

Thank you all for your support!