"The Orbiter" 140g direct dual drive Extruder with up to 10 kg pushing force
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Hi everyone! This is my latest design, a high precision direct extruder using a planetary gearbox plus 12mm diameter dual drive gear-set.
[**You may check out the v1.5 design here**](https://www.thingiverse.com/thing:4725897)
[**New Orbiter F2.85 for 2.85mm filament**](https://www.thingiverse.com/thing:4860182)
**Visit our official webpage:** [https://orbiterprojects.com/](https://orbiterprojects.com/)
[Click here to join our Facebook support group!](https://www.facebook.com/groups/705637896767655)
Short spek:
- Gear ratio - 7.5 (new option 7.2)
- Filament pushing force:
- LDO-36STH17-1004AHG 17mm stepper up to 7.7Kg
- LDO-36STH20-0504AHG 20mm stepper up to 9.4Kg
- Filament acceleration up to 600mm/s^2
- Retraction speed: 60mm/s(24V power supply), 30mm/s (12V power supply)
- Overall weight is about 140g
**Please do not run the LDO stepper above 500mA Peak or 0.35A RMS without proper cooling, it can heat up too much and melt the SLS printed plastic gears**
The orbiter printing @ 200mm/s on my MachCube 2.1:
https://youtu.be/aZolOWtBbME
In the last months I have experimented with worm gear based extruders with very good results, however not perfect so I decided to go for a different approach.
What I have learned is that the worm gears are not the best choice for extruders. Although high gear ratio gives a good theoretical filament pushing force in reality this is not always true, mainly because the worm gear…
