To drive the shredder I used the gearbox I mentioned above. Project can be found here: https://bbprojects.technology/blogs/projects/3d-printed-high-torque-servo-gearbox-version-2
The gearbox was powered by a 3S 2200mah LIPO battery . It's possible to run the gearbox on a 6S LIPO but this would destroy the gears almost immediately in this application.
For the dimensions of the 2 shafts see the drawing that's located in the files section on this page.
It's recommended to use at least 25 percent infill for the structural parts. Use up to 5 outer perimeters and layer heights of at least 0.2mm (when printing with a 0.4mm nozzle). top and bottom layers should be around 1mm.
STL-files and the Fusion 360 source files can be downloaded here: https://bbprojects.technology/stl-fusion-360-source-files/3d-printable-shredder-model
Drawings for the shafts can be downloaded here
|3D-printable 775 gearbox: link to the project: https://bbprojects.technology/blogs/projects/3d-printed-high-torque-servo-gearbox-version-2
|25x25x277 aluminum profile (see drawing in the files section for exact measurements look in your local hardware store to find one.
|6707 -2RS bearinglink: https://shop.jvl-europe.com/epages/61425996.sf/nl_NL/?ObjectPath=/Shops/61425996/Products/6707-2RS
|around 60 screws of 30mm length dimension: 4.5mm diameter, 30mm length, Used to mount everything together
|M5 bolt and nut 60mmdimension: 60mm length, used to mount the big gears to the 2 main shafts
|M5 thread 140mm + nuts Used to mount the gearbox to the shredder
|M5 thread 100mm + nuts Used to mount the gearbox to the shredder
- Uploaded a video of the shredder to YouTube
11/16/2020 at 18:40