Belt Driven Ultimaker 2 Extruder
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This is NOT a straightforward (or budget-friendly) upgrade for your printer! Check out the link below to see if you're running into similar issues before diving in! A brand new extruder design has been developed to tackle the underextrusion problem by teaming up the hobbed gear with rubber belts. Although not the most affordable solution, I've encountered zero underextrusion issues whatsoever with this extruder design. For more details, design files, images, and comprehensive documentation, swing by my post at https://0x7d.com/2014/07/improved-ultimaker-2-material-extruder/.
With this file you will be able to print Belt Driven Ultimaker 2 Extruder with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Belt Driven Ultimaker 2 Extruder.