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This is the fifth installment of my series on building the MakerGear Mosaic 3D printer. This part covers installation of the “business end” of the machine, i.e. the extruder assembly, which consists of the preassembled motor and filament drive / hot-end groups, and the cooling fan. The fan and heater power leads, and the temperature sensor lead, are also connected at this stage.

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Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.