Standard FDM 3d printers use belt drives with nema 17 stepper motors. These are prone to errors and slow. Steps can be lost, belt tension can be a problem, resulting in faulty prints, wasted time and material. Direct magnetic linear motor drives eliminate these problems and can achieve significant increase in quality, accuracy and printing speed.
I'm planning to construct a 3-axis dual-extruder 3d printer with magnetic linear motors that could be driven by Tapas boards. I'd need two boards, one for controlling the motors and one for the heat bed and the 2 extruder hot ends.