Harmonic drive (print in place)
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Preliminary estimate for PETG
€1.40 – €1.71 net (excluding VAT)
For file: flat harmonic drive print in place_0.2mm_PETG_MINI_1h51m.gcode
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Average indicative estimate: €1.55 excluding VAT (range midpoint).
- Weight reported by the author
- 14 g
- Print time reported by the author
- 1.86 hr
- Source material
- PET
- Estimate material
- PETG
- Estimate printer
- Bambu Lab P1S - 0.4 nozzle
- Estimate process
- 0.20mm Standard
Indicative estimate for the selected file only, based on the author’s weight and print time. File variants are not added together. The final price is calculated after file analysis.
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19:1 gearing using strain wave gearing (essentially magic)
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- 4.75 / 5
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- Reviews
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Updated at source:
Model information
- Source
- Printables
- Category
- Engineering
- License
- Creative Commons — Attribution
Only tested with PET-G, PLA might not be flexible enough.
Hole for a 6mm Allen wrench.
Raised model has two small sections raised 0.6mm above the rest of the model. Print in different colour for best results.
This harmonic drive consists of 3 parts, the outer ring, middle flexible gear, and inner wave generator (that is what a video called it, I still think this is magic).
The outer ring has 38 teeth while the flexible gear has 36. The inner ellipse makes the gears mesh at two points. Turning the wave generator causes the points to move and the flexible gear to rotate by 2 teeth per revolution of the wave generator.