Hey Simon, how strong and sharp are your claws? Also, have you ever done a hardness test? For those who don’t know, this is when you take a material and see if it scratches other substances of various hardness. 1 is something like chalk I believe, with 10 being diamond, and there’s a very significant distance between 9 and 10.

I can scratch stone. hard limestone, hard sandstone. Not granite. I file my claws on my countertops while I’m baking. It’s enough to make a dull spot on the marble. I can cut through most plastics. Thin metal sometimes, mostly aluminum or the soft metals.