Did anyone actually read the article? The aluminum foam material has to be thick and the ceramic beads are large.
Also, even if you just looked at the angle grinder video, you can see the claims aren’t really as presented. It’s very cutable, it just happens to eventually dull the cutter eventually. That’s what, a 2” billet they have there?
For their demo on a similar thickness steel plate, I think that most people would have an extremely hard time getting that far in 17-4PH steel let alone SS6xx like Inconel or any one of 100 different steels.
Mostly you would stop from boredom even in a world where the grinder wasn’t similarly full or broken by the time you gave up.
Yes I did watch the video, and yes I agree it would be fairly useless for bike locks. Though there is a very expensive bike lock that has an aluminium surround the try to foil small angle grinders (the idea is that it is too thick for the discs to get through). Would be useful for that.
