Best Dual Extruder expirience.
Before an year I decide to make my own 3d printer instead of baying one as all printers on the market for makers do not offer troubleless dual extrusion and are overpriced. I also decide to use diffrent mechanical system to prevent ringing.
So I end up with ballscrew modules bought second hand from ebay, Duet Wifi board with custom extension, E3d v6 Gold and Bondtech BMG Bowden extruders.
At the end I manage to nail everything and start printing. Thanks to my Printerbot Metal Plus and my CNC I manage to do rest of the parts I need.
So the result:
Dual extrusion without anty-ooze structures like shield, tower or anything. No ringing at all.Aligment of extruders before every print and everytime perfect first layer.
Lower Jerk and Acceleration settings due to almost zero elasticity of the system. Bowden setup with long tubes.