I got a printed key to open some handcuffs! Someone advised me to reorient the key shaft so the layers strengthened the flag, and that worked. The key was uncomfortable to carry, so I need to redesign it.
I was frustrated by the shape of the key when I added it to the whistle, so I designed my own whistle in QCAD for the detailed innards and in OpenSCAD to extrude the drawing layers into different components. The trick was a tail end that would mate with a handcuff key component that I would print in a different orientation. I may have to glue the pieces together.
I modified the model because the handcuff key was so delicate that it would prematurely release from the print bed. The updated model printed wonderfully. I made the handcuff key portion in glow-in-the-dark filament, which paired gorgeously with the bitonal whistle.
I could not sleep because I had a design for a circle whistle stuck in my head. The design should require less material for a comparably loud square whistle and print vertically, so more would fit on a print bed. The idea was that a cylindrical whistle can have a fipple around its circumference, whereas a square whistle has only an air wedge on one face.
The first CylinderWhistle was comically large and silent. REV02 was a convenient size, but it failed on the print bed, and it would not have worked anyway. The first try was my attempt to learn what I was doing wrong. I was trying to balance and minimize several factors that make a whistle work, and by printing in two pieces, I could swap out different cavities and change the distance between the air duct and the fipple. It worked, now I can take that knowledge and make a one-piece whistle. I hope.
Chad Perkins joined us to talk about Her (2013) and his upcoming Kickstarter for the next installment of Set the Hook. We joked and seriously discussed the pros and cons of dating a construct, and we were split on whether it was enjoyable.
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
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.
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This blog, including pictures and text, is copyright to Brian McEvoy.
A practical and tested printable handcuff key
I was frustrated by the shape of the key when I added it to the whistle, so I designed my own whistle in QCAD for the detailed innards and in OpenSCAD to extrude the drawing layers into different components. The trick was a tail end that would mate with a handcuff key component that I would print in a different orientation. I may have to glue the pieces together.
 |
| 2D and 3D views |
I modified the model because the handcuff key was so delicate that it would prematurely release from the print bed. The updated model printed wonderfully. I made the handcuff key portion in glow-in-the-dark filament, which paired gorgeously with the bitonal whistle.
 |
| Two-tone whistle in two senses |
I could not sleep because I had a design for a circle whistle stuck in my head. The design should require less material for a comparably loud square whistle and print vertically, so more would fit on a print bed. The idea was that a cylindrical whistle can have a fipple around its circumference, whereas a square whistle has only an air wedge on one face.
 |
| Cylindrical whistle model |
The first CylinderWhistle was comically large and silent. REV02 was a convenient size, but it failed on the print bed, and it would not have worked anyway. The first try was my attempt to learn what I was doing wrong. I was trying to balance and minimize several factors that make a whistle work, and by printing in two pieces, I could swap out different cavities and change the distance between the air duct and the fipple. It worked, now I can take that knowledge and make a one-piece whistle. I hope.
 |
| REV01, REV02, and REV03 with two cavities |
Chad Perkins joined us to talk about Her (2013) and his upcoming Kickstarter for the next installment of Set the Hook. We joked and seriously discussed the pros and cons of dating a construct, and we were split on whether it was enjoyable.
Critical Affection: Her (1:15)
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
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.
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