Dual extruders in the space of one stepper motor

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Dual extruders in the space of one stepper motor

The new hotness in 3D printers is – and has been for a while – dual extrusion. With two extruders and the requisite filament supply, it’s possible to print objects in two colors or two different materials. There’s a problem with this setup, though: each extruder requires a …

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