Even though I started a group of black-handled knives explicitly for Grindfest, I had a clear polycarbonate handle that looked too cool to ignore. The Grindfest knives also needed the Cold Steel training knife, since that is the hardware upon which we agreed to standardize. I had a different training knife by Master Cutlery that was shorter than the standard, so I decided to combine the extra hardware into a custom weapon that I may let folks use in the exhibition matches. The blade needed reshaping for the handle, and that meant cutting it down with a hack saw, then rounding it with a hole saw and a power drill.
I drilled pilot holes in the tube, which was easy to align since the pipe was clear. The rubber blade got pilot holes next, then they were expanded to 7/32" (5.5mm). I pushed cylindrical aluminum standoffs into those holes, which was a tight fit. To get the blade inserted, I squeezed the sides of the handle with a clamp and pushed real hard.
I cut aluminum templates for this knife using the same technique I used for Velostat, but this time I bought a cutting mat. I used masking tape to hold the aluminum to the cutting mat and marked my lines before cutting them with a razor. I still cut all the curved edges with a pair of scissors. The first time, I cut two identical aluminum strips, so I had to cut a couple more for the other side, which wasn't a problem when I cut Velostat since I could glue them on either side. Now I have a pair of spares.
Once I had a complimentary pair of aluminum strips on the knife, I laid the high-voltage wires on them and covered them with a tab of tape. The last step was to glue the red switch adapter to the tube. This transparent version should make for an excellent demonstration since all the parts are visible, and it is functional.
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
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 in 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.
2020-03-11
I drilled pilot holes in the tube, which was easy to align since the pipe was clear. The rubber blade got pilot holes next, then they were expanded to 7/32" (5.5mm). I pushed cylindrical aluminum standoffs into those holes, which was a tight fit. To get the blade inserted, I squeezed the sides of the handle with a clamp and pushed real hard.
Sized knife blade
I cut aluminum templates for this knife using the same technique I used for Velostat, but this time I bought a cutting mat. I used masking tape to hold the aluminum to the cutting mat and marked my lines before cutting them with a razor. I still cut all the curved edges with a pair of scissors. The first time, I cut two identical aluminum strips, so I had to cut a couple more for the other side, which wasn't a problem when I cut Velostat since I could glue them on either side. Now I have a pair of spares.
Once I had a complimentary pair of aluminum strips on the knife, I laid the high-voltage wires on them and covered them with a tab of tape. The last step was to glue the red switch adapter to the tube. This transparent version should make for an excellent demonstration since all the parts are visible, and it is functional.
Clear handle demonstration knife
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
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 in 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.
2020-03-11
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