Based on yesterday's dimensions, I designed a simple compass that could fit into a clear plastic jar I had. The pot was so small that I had to cut out extra clearance from the top and bottom discs to install all the compass parts. I measured my plywood, which was 7/64" (2.78mm), but I assumed it was 3mm. I changed the drawing to ensure a tight fit between my parts.
Parts for jar demo
I cut the pieces and ran a marker over the bottom to hide the scorched back. I dropped the unit, but the magnet did not dislodge, so the design was solid. I still see friction resisting the spinning, but I have plans for the next version, which should be more repeatable. This version relies on my questionable ability to shape aluminum rods, but the next one will use more manufactured parts.
Jar demo on keyboard for size reference
GitHub files for GrinderCompass
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
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is 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.
2023-08-03
I cut the pieces and ran a marker over the bottom to hide the scorched back. I dropped the unit, but the magnet did not dislodge, so the design was solid. I still see friction resisting the spinning, but I have plans for the next version, which should be more repeatable. This version relies on my questionable ability to shape aluminum rods, but the next one will use more manufactured parts.
GitHub files for GrinderCompass
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
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is 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.
2023-08-03
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