Multi Color 3D Printer with single hotend

For the last few weeks I have being busy making the multi filament/color/material 3D printing works. After numerous experiment and test, I finally focus on the Printed Junction connector method.

Several design of the Hotend junction connector that has being tested in making this setup work. I will like to share with all about the design of this junction connector in detail here.

Summary of the Hotend Junction connector;

Version 1.0 -

The Y junction works well the 1st time, but the PTFE tube was not easily removed when there is problem with the filament. While I was doing the 1st few test, most of the time was spent fighting with the tube and filament. I decided to call a stop and work on the PTFE tube catch.



Version 2.0 -
Now the tube is removable, any broken filament can be removed easily.

Version 3.0 -
Let me try 3 color. It took me almost 2 days to design this. The Bottom left photo part was suppose to be a tool to cut the tube. It was never use. Then I thought it will be good to use as the reference for the 3 color junction. I was wrong.

Version 4.0 -
Version 3 flop, Now I know the window at the front is not just a good to have feature. It is a MUST have for troubleshooting while testing. Taking a step back to the previous 2 color design, I took some design and calculation to add a 3 one in. Surprisingly, it works well.

Currently, I am still testing with the setup to make the system more stable for the printing on my Ai3 printer. Follow me if you are keen to know more in future. Cheers.