6maker

You can find here a new prototype of the Dual Balance system to use a dual extruder and some example things at this links:
https://www.thingiverse.com/thing:2644923
https://www.thingiverse.com/thing:2608925
https://www.thingiverse.com/thing:2593527

You can find here my test with a water-soluble PVA Wire the SCAFFOLD and POLY PLUS PLA in dual material mode.
After many tests and help with the community, i found this parameters to print the SCAFFOLD with 0.3mm nozzle and the cura 2.7 in 0.2mm per layer. I 'm using a special head "Dual_Balance" but you can also use this paramters with you dual printer with 0.3mm of nozzle. You can find below the picture with all the cura 2.7 parameters for the SCAFFOLD.

You can find below the picture with all the cura 2.7 parameters for the white POLY PLUS PLA.

You can find the 3d model with this link:
https://www.thingiverse.com/thing:2608925
The only problem that has occurred is a layer that is detached from the tower caused by my setting on CURA to clean the nozzles. so to avoid!

This is my first test with the new cover Dual Balance with the Poly Plus PLA and the RED ABS of Ultimaker 1623 to print a new bulbasaur in 0.15 mm per layer with my dual extruder system.
You can find also the grand brother at this address:
https://www.thingiverse.com/thing:2644923

Here you can see my last design to maintain 4 bowden and the new connector for the sensor and the heater for ultimaker 2+.
I designed this 4 bowden support for the Dual_balance system who works in dual mode but you can also use it in simple mode.
The idea is to soldering together two Double Row Male Breakable Pin Header Connector Strip:
Brand Name: SHWB Model Number: 2.54 Pin Header
This Pin header Connector is not very expensive and useful with many standard 2.54 mm male connector (or Male and female). You can find below a exemple.
https://www.aliexpress.com/item/2pcs-Pitch-2-54mm-80-Pin-2x40Pin-SMT-SMD-Double-Row-Male-Breakable-Pin-Header-Connector/32827789967.html
And after you can slip this new type of male to male connector inside this 4 bowden support.
You can find here some example of other 3d printing:
https://www.thingiverse.com/thing:2582766

You can find my last design fan cover for Dual_Balance system but you can also use it for standard Dual extruder or with only one extruder.

PIKACHU WITH DUAL-BALANCE