Hello Jens, and thank you for the links. That's quite a blade. I checked out some of the posts on the links you sent. It made me curious, and I grabbed a compass and ran it along several blades that I've forged and made into knives. They do all sorts of things. Some hardly move the compass, some make it spin, some move it back and forth. LOL!
I didn't do anything special to any of them to induce any sort of magnetism or magnetic fields in them, so am not sure what creates the different effects. Interesting nonetheless...
Michael
www.radharcknives.com