Speed

The finely meshed gear sizing and ratio allows the extruder to reliably reach retraction speeds of 100mm/s (and higher if you are adventurous).
High speed retractions not only allow cleaner non-print movements with less stringing, but also allows for dual extruder / single-nozzle (e.g. bowden tube) printing with quick, clean swaps between filaments.

Power

While the almost 2:1 down-gearing is less than other typical geared extruders on the market, we’ve found this ratio still gives a typical Nema 17 extruder motor* sufficient torque to overwhelm the thermal heating capacity of almost every hotend we’ve tested, including the e3D volcano. Even with average industry-standard electronics and stepper chips, you won’t have to fear the Gemstruder’s ability to keep up for high throughput prints.

Features

• Open-source model using industry-standard components
• Ease of assembly and use
• High speed reliable retractions
• Powerful, quiet gearing
• Hot feeding capable
• Fully enclosed filament path
• Compensation for slight filament tolerances