The adjustable height pin at the top was a good idea, but it would not align properly. I designed a base with three nuts embedded into gears so I could raise or lower each corner independently. I used an online gear generator to make a series of gears until I found sizes I thought would cut all right from the 2mm plywood. I made a large internal-teeth gear to drive the nuts synchronously, but it was prone to binding.
Spring-loaded pin holder with gears
I revised the layer containing the gears to have rounded corners, then cut it from 3mm plywood, but I could not reliably drive them simultaneously. The bottom was a simpler version without any gears, but the pins still did not align when I assembled it. The pins were severely trimmed escutcheon pins. The problem is the short shaft carrying the pin. There is too much room for it to wobble.
Pins do not align
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.
2023-07-26
I revised the layer containing the gears to have rounded corners, then cut it from 3mm plywood, but I could not reliably drive them simultaneously. The bottom was a simpler version without any gears, but the pins still did not align when I assembled it. The pins were severely trimmed escutcheon pins. The problem is the short shaft carrying the pin. There is too much room for it to wobble.
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.
2023-07-26
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