Flying extruder for Delta printers

How it works : https://youtu.be/spw1ihSzrZo

Hello all,

I designed this flying extruder mod for my BIQU printer because it's far better for avoid extrusion problems with long PTFE tube and flexible filaments, now the tube are only 70mm long before it was 650mm

This can avoid problems with too many retractions, avoid flexible filaments extrusion, avoid filament bend in tube, etc.....

I designed that for my BIQU Kossel Pro printer, but it can work with any delta printers with 20x20 alum