![Finally, an Objective Measurement for Blade Sharpness! [sword talk] @JustaBug](https://i.ytimg.com/vi/xCnfDiZ7W7c/maxresdefault.jpg)
Uploaded February 2021 | Updated September 2026, 2 weeks ago
Today we dive deep into the topic of blade sharpness. How do you tell if a blade is sharp or blunt? For the last two weeks I have been hung up wondering if there is an objective measurement for blade sharpness and trying to come up with one, turns out there is one that has been around for over a decade; blade edge radius and in this video I will talk about what it is and if it matters to knife and sword enthusiasts sharpening their blades.
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com
Today we dive deep into the topic of blade sharpness. How do you tell if a blade is sharp or blunt? For the last two weeks I have been hung up wondering if there is an objective measurement for blade sharpness and trying to come up with one, turns out there is one that has been around for over a decade; blade edge radius and in this video I will talk about what it is and if it matters to knife and sword enthusiasts sharpening their blades.
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com
![Finally, an Objective Measurement for Blade Sharpness! [sword talk]](https://i.ytimg.com/vi/xCnfDiZ7W7c/mqdefault.jpg "Finally, an Objective Measurement for Blade Sharpness! [sword talk]
Today we dive deep into the topic of blade sharpness. How do you tell if a blade is sharp or blunt? For the last two weeks I have been hung up wondering if there is an objective measurement for blade sharpness and trying to come up with one, turns out there is one that has been around for over a decade; blade edge radius and in this video I will talk about what it is and if it matters to knife and sword enthusiasts sharpening their blades.
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: https://www.buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com")
![Trying Seitei Iaido - kata snapshot March 2021 [katana training/vlog]](https://i.ytimg.com/vi/zURp8vkhjv4/mqdefault.jpg "Trying Seitei Iaido - kata snapshot March 2021 [katana training/vlog]
Today I talk about my experience with Seitei Iaido. Im still very much a beginner but it has been a fun journey for the last 4 weeks and Ill continue to train hard. Ive been training at Suigetsu Iaido if anyone from Sydney wants to come check it out.
Heres a snapshot of my first 8 kata, I still havent learnt all 12 but its a good picture of my form at present. Plenty to improve upon and plenty to learn. Even just watching this video I can quickly spot my mistakes. Fixing them is another matter though.
Swords: 1060 steel katana 70cm blade length
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: https://www.buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com")
![Taking my Kaya Windfighter to the Range - Korean Traditional Archery [vlog / archery training]](https://i.ytimg.com/vi/zgS39IK72T8/mqdefault.jpg "Taking my Kaya Windfighter to the Range - Korean Traditional Archery [vlog / archery training]
Today I took my Kaya Windfighter to the archery range. It was unusual bringing in a korean traditional horse bow to a range where everyone else was shooting recurve and compound bows but it was a lot of fun. Im still not very good at archery but were getting there!
Bow: Kaya Windfighter 35# draw weight
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: https://www.buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com")
![Bohi vs Boshi on a Katana - which is which? [sword talk]](https://i.ytimg.com/vi/zh0tIZFbMx8/mqdefault.jpg "Bohi vs Boshi on a Katana - which is which? [sword talk]
Bohi and boshi are both parts of the Japanese sword, be that a tanto, wakizashi, katana or nodachi. However, theres a lot of confusion around which is which and what they do. Today Ill hopefully clarify which is which and their functions and debunk some myths while Im at it.
Swords: T10 clay tempered wakizashi 55cm blade length
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: https://www.buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com")
![Progression vs Preservation in Historic Martial Arts [sword talk]](https://i.ytimg.com/vi/zi-LAKMzqpQ/mqdefault.jpg "Progression vs Preservation in Historic Martial Arts [sword talk]
Today we talk about striking a balance in historic fencing. Do we push for progression or strive for preservation in historic sword martial arts? We discuss how HEMA has found a balance and how we are yet to achieve this for Historic Asian Swordsmanship, looking at case studies of Koryu, Kendo and XMA and how all of these lack balance but achieve their goals. Hopefully in future we will see more HEMA like clubs training in Asian Historic Fencing.
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you would like to support the channel you can buy me a coffee here: https://www.buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com")
![A Fun Grappling Exchange in Sword Sparring [korean historic fencing]](https://i.ytimg.com/vi/zpbizJOLj9o/mqdefault.jpg "A Fun Grappling Exchange in Sword Sparring [korean historic fencing]
A fun grappling exchange from sparring this week at Sydney Korean Historic Fencing and a breakdown of the actions.
Always be aware of your surroundings and minimise harm to yourself, others and your environment. Never use weapons when intoxicated or upset or for any act of violence.
If you live in Sydney we’d love to train with you, check out our club here: https://www.koreanhistoricfencing.com/
If you want to learn more about Jedok Geom and Korean Swordsmanship check out my book here: https://www.barnesandnoble.com/w/joseon-korean-swordsmanship-from-the-source-jedok-geom-dr-nathan-jo/1142925625
If you would like to support the channel you can buy me a coffee here: https://www.buymeacoffee.com/justabug Thanks to everyone who has supported the channel, your coffees are much appreciated!
Check out my Instagram at just_a_bug_swordsman for more content.
For messages and reaching out to the channel email me at justabug.yt@outlook.com")
