I printed four of the vented buoys to determine how small I had to make them fit inside a test tube. The 9.5 mm diameter version worked best, but the vents interfered with the magnet socket.
I modeled a container with a cylindrical tube in the center for the buoy. When I find a suitable size for floatation, I may make it taller, but I can test the threads and see how the pieces fit together.
I printed the container, and a buoy fit inside without friction. With some work, the top and bottom threaded together, but the seam was clean. Lastly, I submerged a buoy with a magnet installed and was unsurprised when it immediately sunk. I need something more voluminous.
I printed several buoys to find one that would float, but just barely. A tall one worked very well, so I gave it stripes and stuck it in a test tube full of water. When I added the plug, I increased pressure enough to collapse the buoy partially, but it sprung back into shape and rotated smoothly.
I sketched my idea for a buoy with hemispheres on the top and bottom. If they match closely, the rounded surfaces should create an oil cushion between them and the container.
I modified the buoy design by removing the bottom hemisphere, adding a flat floor, and adding a threaded stub for the magnet. Seeing the unit in 3D helped me visualize how to proceed with smooth parts and printer resin as adhesive.
The rest of the summary posts 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
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.
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| Multiple buoys with decreasing diameters |
I modeled a container with a cylindrical tube in the center for the buoy. When I find a suitable size for floatation, I may make it taller, but I can test the threads and see how the pieces fit together.
 |
| Tapered capsule case |
I printed the container, and a buoy fit inside without friction. With some work, the top and bottom threaded together, but the seam was clean. Lastly, I submerged a buoy with a magnet installed and was unsurprised when it immediately sunk. I need something more voluminous.
 |
| Printed case and secured magnet |
I printed several buoys to find one that would float, but just barely. A tall one worked very well, so I gave it stripes and stuck it in a test tube full of water. When I added the plug, I increased pressure enough to collapse the buoy partially, but it sprung back into shape and rotated smoothly.
 |
| Spinner in water reacting to magnet |
I sketched my idea for a buoy with hemispheres on the top and bottom. If they match closely, the rounded surfaces should create an oil cushion between them and the container.
 |
| Capsule buoy sketch |
I modified the buoy design by removing the bottom hemisphere, adding a flat floor, and adding a threaded stub for the magnet. Seeing the unit in 3D helped me visualize how to proceed with smooth parts and printer resin as adhesive.
 |
| The threads will not work, but I see how to move forward |
The rest of the summary posts 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
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.
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