V2.1 is available here: https://www.printables.com/model/692818-magnetic-idex-t0-and-t1-v21
This is a completely mechanical/magnetic IDEX 3D printer design. T1 tool can be installed on any replicator clone 3d printer. I have tested it on Flashforge Creator Pro 2.
Assembly BOM pdf is located in the Tool 0 (T0) printables listing here: https://www.printables.com/model/517489-magnetic-idex-t0-toolhead
T1 Side A and T1 Side B are the only parts unique for T1 toolhead.
Because of the mechanical nature of this printer, no additional X axis belt or motor is required.
It can accomplish all IDEX modes:
The author marked this model as their own original creation.