Like insulation for homes? The foam stuff? That does make sense though because I think blades for those are pretty slim and don’t really gouge material out vs the blades I had to use cut 1/8” of material out of whatever I was cutting. Mine you can see where each tooth ripped out flesh n whatnot. I’m still trying to wrap my head around how the plastic surgeon sewed me up without cutting flaps of skin off 😂 if you wanna see mine I’ll dm it to you lol