MK8 Filament Drive Dual Extruder

thingiverse

I'm working on my very first extruder design. It's built around a reliable MK8 Filament Drive and is specifically made for dual extrusion purposes. Below, you'll find the step-by-step instructions to bring this project to life. Here's how I built it using high-quality PLA material with 30% infill. While some people may worry about PLA overheating, I can confidently say that when paired with an E3D hotend, the mounting area doesn't even get warm. To assemble this extruder, you'll need: * 2 - Nema 17 stepper motors * 2 - MK8 Filament Drives * 2 - 625ZZ bearings (5x16x5) * 4 - 3mm x 30mm socket cap screws for hotend attachment * 4 - 3mm nylon insert lock nuts for hotend attachment * 8 - 3mm x 6mm button head screws for stepper attachment * 3 - 4mm x 30mm socket cap screws for mounting to the x-axis * 8 - 3mm x 45mm socket cap screws for holding the roller in place * 8 - McMaster part #9657K271 springs for securing the roller to the extruder http://www.mcmaster.com/#9657k271/=vovaio * 8 - 3mm hex nuts for attaching the roller to the extruder * 2 - 5mm x 16mm socket cap screws to hold the bearing into the roller * 2 - 5mm nylon insert lock nuts to secure the bearing into place