A simple jigsaw was used to cut between the teeth of the 500mm gear. This gear was the one which had to be made on hardboard rather than plastic because the plastic sheets were too small. Fortunately, only two gears this size were necessary and a single sheet of the hardboard was enough for both. The material is more difficult to work with and heavier than the plastic.
The oscillating tool was used to smooth the spaces between the gear teeth. The Dremel attachment was used but it failed. The hard plastic beneath the sanding strips melted under the heat, the plate that attaches to the tool broke in two places and the rivet at the hinge became wobbly. I would not recommend this tool tip.
The manual tool made from scrap wood was brought out again. This tool has worked well in the past but it is slow, tiring and uses up sandpaper quickly.
Downloads:
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.
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2016-09-17 (Sa)
Cutting between the gear teeth
The oscillating tool was used to smooth the spaces between the gear teeth. The Dremel attachment was used but it failed. The hard plastic beneath the sanding strips melted under the heat, the plate that attaches to the tool broke in two places and the rivet at the hinge became wobbly. I would not recommend this tool tip.
Area between teeth
Broken tool tip
The manual tool made from scrap wood was brought out again. This tool has worked well in the past but it is slow, tiring and uses up sandpaper quickly.
Manual sanding tool
Downloads:
- Gears
- 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.
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2016-09-17 (Sa)
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