To be fair, the wire that is breaking is about the thickness of a human hair. I think it just work-hardens as the result of millions of tiny movements and then fractures. TBH, I think those tools are incredibly useful for some things, but there are better tools for most things and they're also incredibly noisy, so I don't use mine much.
Aha! @Trunkie I found the repair vid, although it's in Russian. @Bobbo the broken wire is shown at about 2:30.
To be fair, the wire that is breaking is about the thickness of a human hair. I think it just work-hardens as the result of millions of tiny movements and then fractures. TBH, I think those tools are incredibly useful for some things, but there are better tools for most things and they're also incredibly noisy, so I don't use mine much.
Aha! @Trunkie I found the repair vid, although it's in Russian. @Bobbo the broken wire is shown at about 2:30.
https://www.youtube.com/watch?v=aQekVmqcA9s