The external switch model was nearly complete. I expanded the switch holster model to be deeper so it would fit the switch. I added a lip on the top inside since the button cap had a ridge at the bottom. I had to trim the edges of the previous button cap to make it fit. Previously, I made the switch hole almost large enough to fit the whole cap, but I could tighten it and reduce the unnecessary gap. The previous switch holster was weak because I carved out space for the switch that was unnecessarily wide to allow room for the electrical leads, but once I accounted for how little room they needed, the walls could be thicker and still fit the switch.
I printed both halves of the new model, but they did not fit. I assumed this was due to a mismatch of dimensions and made a cutaway view of the model to see exactly where I was off the mark. The issue was that I was not taking off enough from the flat plane between the holster and the cover. I printed new copies of the cover, and they fit wonderfully. The final test was adding a layer of elastic material. I chose nitrile since it was hypoallergenic. The material was from a disposable exam glove, and I appreciated the black. I stuffed a small scrap into the cover and pushed the holster inside. When I overstretched the nitrile, it accidentally held the button. I trimmed the glove material inside and was delighted to have a usable, covered switch.
GitHub repo for EleKSco.
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
Completed projects from year 9
Completed projects from year 10
Completed projects from year 11
Completed projects from year 12
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.
2026-08-28
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| Revised switch holster |
I printed both halves of the new model, but they did not fit. I assumed this was due to a mismatch of dimensions and made a cutaway view of the model to see exactly where I was off the mark. The issue was that I was not taking off enough from the flat plane between the holster and the cover. I printed new copies of the cover, and they fit wonderfully. The final test was adding a layer of elastic material. I chose nitrile since it was hypoallergenic. The material was from a disposable exam glove, and I appreciated the black. I stuffed a small scrap into the cover and pushed the holster inside. When I overstretched the nitrile, it accidentally held the button. I trimmed the glove material inside and was delighted to have a usable, covered switch.
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| Pushbuttons with nitrile liners |
GitHub repo for EleKSco.
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
Completed projects from year 9
Completed projects from year 10
Completed projects from year 11
Completed projects from year 12
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.
2026-08-28
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