ProtoXtruder 2.0

ProtoXtruder 2.0

Last update: 2024/04/19

The sequel of ProtoXtruder!
With the new gears of HGX 2.0 Extruder (affiliate link), it becomes thinner and lighter while providing the same benefits of the large-sized gears.

Although it is named ProtoXtruder 2.0, it's not a direct upgrade from the previous design. There's not much you can reuse in the BOM.

Refer to the dimensions in the drawing for compatibility with your printer. The mounting holes are compatible with Sherpa Mini Extruder.

If you would like to support my work, the following platforms are available. Thank you!
ko-fi, PayPal.me 

You might also want to check out this slightly different version here!

Features

• High gear reduction ratio (44:10, 37:17).

• Large extrusion gears (18mm diameter) providing large filament contact area.

• Twirling hobbed teeth for nice filament grip and consistent flow.*

• Compact and light weight. All the printed parts can be printed in about 1hr.

• Variants for different Bowden tube retainers.

• Low profile and low center of mass. 

• Optional support for a toolhead filament sensor.

Please checkout the Github repo for more details (BOM, weight, assembly, klipper config, etc.)

Toolhead Filament Sensor

Use in conjunction with this Toolhead Filament Sensor for ProtoXtruder 2.0

Changelog

2026-02-08

• Add support for toolhead filament sensor.

2024-04-19

• Update to match the pin length of the gear kit.

2024-03-28

• Initial release

Special Thanks

Designing and testing an extruder design takes a lot of time and many iterations.

Thanks to Polymaker for sponsoring me the filament for printing many prototypes.

Also, thanks to Haldis / HS3DPrinter for sending me a HGX 2.0 extruder for me to make designs with their new gears. 
Check them out at their website and AliExpress (affiliate link).