I remodeled the spring to use four spokes instead of two, but the printing process for such delicate parts was too much. The bottoms were in bad shape, the springs lost form, and one completely failed. This compliant spring configuration is not usable as is.
I scrapped the compliant spring idea, for now, in favor of a new design that uses a buoy floating in oil. The floation will provide the up and down motion while the viscosity will cushion the sharp movements.
I modeled the buoy with a drainage hole at the bottom, which I will seal after cleaning. The top has a threaded socket for connecting the guide rod.
I changed the buoy design so the magnet was on the inside. The threaded portion will accept an M2.5 machine screw to hold the magnet in. The cylindrical pill-shaped buoy should spin freely inside an oil-filled vessel that closely matches sizes.
I printed four lengths to find a buoyant volume, but none fit into the test tube, which was slightly tighter at the bottom. The shortest, pictured inside the test tube, had "ears," which were internal structures for holding the threaded socket but could become part of the feedback mechanism.
I added vents to the buoy, starting with three. They interfered with the threaded socket supports, so I changed the code to make as many supports as necessary to go between the vents. This should also keep the magnet seated more securely.
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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| Printing all the overhangs was too much |
I scrapped the compliant spring idea, for now, in favor of a new design that uses a buoy floating in oil. The floation will provide the up and down motion while the viscosity will cushion the sharp movements.
 |
| New idea with poor shading |
I modeled the buoy with a drainage hole at the bottom, which I will seal after cleaning. The top has a threaded socket for connecting the guide rod.
 |
| Cutaway view of buoy with an open bottom |
I changed the buoy design so the magnet was on the inside. The threaded portion will accept an M2.5 machine screw to hold the magnet in. The cylindrical pill-shaped buoy should spin freely inside an oil-filled vessel that closely matches sizes.
 |
| Blue buoy with ghostly magnet |
I printed four lengths to find a buoyant volume, but none fit into the test tube, which was slightly tighter at the bottom. The shortest, pictured inside the test tube, had "ears," which were internal structures for holding the threaded socket but could become part of the feedback mechanism.
 |
| Four lengths and an ill-fitting magnet socket |
I added vents to the buoy, starting with three. They interfered with the threaded socket supports, so I changed the code to make as many supports as necessary to go between the vents. This should also keep the magnet seated more securely.
 |
| Side vents and more magnet supports |
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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