Large gear for Boston pencil sharpener
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Estimated printing price per file
€0.70 – €0.85 net (excluding VAT)
For file: large-gear-shaft-fit-v4_0.2mm_PLA_MK3_48m.gcode
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File used for this estimate
Average indicative estimate: €0.78 excluding VAT (range midpoint).
- Weight reported by the author
- 9 g
- Print time reported by the author
- 48.6 min
- Source material
- PLA
- Estimate material
- PLA
- 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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Replacement gear for a Boston Model 19 pencil sharpener.
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Updated at source:
Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution
This gear was made with the help of STLGears.com I chose a spur gear with these design parameters.
The circular hole is just to know where the center is. I then import the file, scaled for the proper diameter (Spur_M0.7_Pa20_Z71-2mm-ch-5487.stl) into Openscad to add the hub and the rectangular cutout.
The Spur_M0.7_Pa20_Z71-2mm-ch-5487.stl file needs to be in the same directory as the large-gear.scad file should you wish to make some adjustments.
The file to use is large-gear-shaft-fit-v4.stl
I used PLA with 4 perimeters and 15% honeycomb infill. The gear fits tightly on the rectangular shaft and a generous amount of white lithium grease is added to both gears.