That knife looks very serious. I wouldn't mess with a guy if he had such a weapon with him. Good work! I wonder if I can do the same thing with my chainsaw chain. Unfortunately, my chainsaw broke several months ago and I didn't know what to do with it until that day.
The problem is that I have a scroll saw and I'm not really sure that it can cut metal chain. I was reading information here https://mitersawjudge.com/best-scroll-saw-reviews-and-buying-guide/ but didn't find anything about cutting metal materials. I have an old axe and I think that it would be interesting to use chainsaw chain the same way you did. I think that would be an ideal weapon for a viking, lol.
Cheers, Joey.