Gear with center cut out
The hole saw cut a larger diameter hole than expected. This could be due to a couple things. First, the offset teeth of the saw were intended to cut a hole larger than the diameter of the drum. Second, there was wobbling due to an unstable work surface and that could have bored out the hole more than intended. Third, measurements from the last cut may have been inaccurate.
Poor fit between the gear and the hub
Four hubs total will be used in the project. One of the hubs had been printed so the remaining three can be printed to match the actual size of the hole cut. It could be possible to get the hub close to the center of the gear by estimation but with a 3D printer available there's no reason each hub cannot be custom printed for that gear. A quick measurement was taken on the gear and a new hub was printed. The new hub fit without wobbling.
Custom printed hub for a 300mm diameter gear
- Panel layout PDF or DWG
- S Symbol Plate OpenSCAD source or STL model
- Ultrasonic flush-mount source or STL
- Internal ring gear
- Spring hub includes source and STL for metric and imperial
- 1 Small Arduino Micro
- 2 Stereo potentiometers (10K)
- 4 Multi-turn potentiometers (10K)
- 2 Twelve volt DC motors
- 1 Dual H-bridge
- 2 Ultrasonic distance sensors
- 1 Sine wave generator or the Amazon version
- 1 Voltage Regulator
- 1 Twelve volt three amp power supply
The rest of the posts for this project have been arranged by date.
First time here?
Completed projects from year 1.
Completed projects from year 2.
Completed projects from year 3.
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