I have a comb binder that I use to create notebooks with my custom graph paper. I do not always have a pen when I grab a notebook, so I modeled a G2 pen refill and a tube to surround it that would fit perfectly into the 1/2" spines I bought. The pen is always ready to go whenever I have an idea.
I picked up an old vinyl cutter at a thrift store and had to find software. The best choice had a trial version, but I did not want to throw a blade into it and cut something irreparable, so I downloaded an adapter for inserting a Sharpie, and it worked well, so I paid for the software. The next step was correcting the cutter's X and Y scaling, but I wanted something finer than a Sharpie, so I adapted my comb binder pen holder to fit into the blade socket. The pen holder worked wonderfully, and because I only used a refill, they were inexpensive and short enough to fit under the cutter's lid.
I owned a vinyl cutter that used a Roland-compatible drag knife, but I wanted a pen-style drag knife with the same-quality blades. I could not find anyone who produced a handle, and no one on Thingiverse had anything that used the same cartridge. I designed and printed a handle for my blade, and it turned out wonderfully. The blade's adjustability is unhindered, and I can pop it out and put it back in my vinyl cutter at a moment's notice.
I wanted to print large signs with my vinyl cutter, and my gel pen adapter was too fine to make one in less than an hour. I created a model that held a large permanent marker, but it was so girthy that I had to make the holder sit outside the usual blade holder. Still, I printed a 22" x28" sign in nine minutes.
I had this grand idea for a circular piano with light-up keys. It would change octaves based on whether you play up or down the rows, so the interface would stay clean. The lights would show musical scales based on my programming or the traditional notes. I added to the aesthetic by imagining it as an early-era instrument with rudimentary electrics, wooden construction, and brass hardware. I drew the first key arrangements in CAD because it was faster than sketching 36 keys by hand.
We reluctantly watched Cherry 2000 from 1988. This movie was a textbook example of the late-night skin flick that we expect from the late eighties. It had more funding than that, and it showed in the costumes and set design, but the direction and writing were not there.
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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| I love it, but it is the opposite of universal |
I picked up an old vinyl cutter at a thrift store and had to find software. The best choice had a trial version, but I did not want to throw a blade into it and cut something irreparable, so I downloaded an adapter for inserting a Sharpie, and it worked well, so I paid for the software. The next step was correcting the cutter's X and Y scaling, but I wanted something finer than a Sharpie, so I adapted my comb binder pen holder to fit into the blade socket. The pen holder worked wonderfully, and because I only used a refill, they were inexpensive and short enough to fit under the cutter's lid.
![]() |
| A new-to-me vinyl cutter retrofitted to use G2 pen refills |
I owned a vinyl cutter that used a Roland-compatible drag knife, but I wanted a pen-style drag knife with the same-quality blades. I could not find anyone who produced a handle, and no one on Thingiverse had anything that used the same cartridge. I designed and printed a handle for my blade, and it turned out wonderfully. The blade's adjustability is unhindered, and I can pop it out and put it back in my vinyl cutter at a moment's notice.
![]() |
| GitHub repo for DragKnifeAdapterPen. |
I wanted to print large signs with my vinyl cutter, and my gel pen adapter was too fine to make one in less than an hour. I created a model that held a large permanent marker, but it was so girthy that I had to make the holder sit outside the usual blade holder. Still, I printed a 22" x28" sign in nine minutes.
![]() |
| Tracing an "e" with 2.5mm thick lines |
I had this grand idea for a circular piano with light-up keys. It would change octaves based on whether you play up or down the rows, so the interface would stay clean. The lights would show musical scales based on my programming or the traditional notes. I added to the aesthetic by imagining it as an early-era instrument with rudimentary electrics, wooden construction, and brass hardware. I drew the first key arrangements in CAD because it was faster than sketching 36 keys by hand.
![]() |
| Sketching the key layout |
We reluctantly watched Cherry 2000 from 1988. This movie was a textbook example of the late-night skin flick that we expect from the late eighties. It had more funding than that, and it showed in the costumes and set design, but the direction and writing were not there.
Critical Affection: Cherry 2000 (1:06)
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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