JD Duallie Belt Driven Dual Extruder for Ord Hadron, others

This is a belt-reduced non-bowden dual extruder, with care taken to allow flexible filament use. It has a tight 17mm nozzle interval, can probably be made under 500g. This was designed first around the Ord Hadron X carriage, but other mounts should be forthcoming.
I tried my best to minimize the weight penalty over many non-bowden single extruders. I believe I can have a working unit under 500g. The first working prototype is 600g, including hot ends and motors. Many direct drive single extrud