February 13, 2026
Description
Why do you need a 5-way hub? Once you start using an AMS (Lite) or BMCU, you may notice that printing from an external spool becomes dramatically inconvenient. You have to disconnect one of the PTFE tubes from the AMS Lite Hub and replace it with a tube from the external spool.
This problem can be solved by using a Y-splitter or a 5-way hub.
I printed and tested plenty of existing variants — none of them satisfied me, and finally I had to design my own version.
Key features of this design:
| 1. Print the 5-way hub and check the channels - they must be clean. Then insert the ECAS04 connectors until they stop, as shown in the photo |
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2. Eject and disassemble the original AMS Lite Hub. How to do this - see Bambu Lab Wiki. Remove 3 parts, as shown in the photo. Don't remove the funnel - leave it in place. Then insert the lower part of the original AMS Lite Hub with the funnel into its base. |
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3. Insert the printed 5-way hub into the lower part of the original AMS Lite Hub until it clicks. Pay attention to the mark “HUB” on the printed 5-way hub - it must be on the front side. You should hold the lower part firmly while inserting the printed hub.
Then insert the PTFE tube from the external spool into the central hole. The central channel has a PTFE fixing belt inside, so the tube end should pass through this belt and rest against the rim. It takes about 12 mm of the tube. You will feel a slight click as the tube passes through the belt.
After that, insert four PTFE tubes from AMS (BMCU) in the ECAS04 connectors.
If you use PTFE tube clips (for 5 PTFE tubes), pass the central tube through the central clip hole prior to inserting this tube into the hub. |
If you're not too concerned about the added weight of the print head and prefer greater reliability and stability, you can add a support structure (the Hub Assistant) to this hub.
Good luck with printing!
License:
MakerWorld Exclusive License
Sasver
