Public service announcements. Please don’t use these.

I'm not a professional mechanic but I've been playing with these cars since 89 and doing my own maintenance since the same time I agree man razor blade brother! It's one thing if you got a bare casting and it's going to be hot tanked, cleaned,and cleaned again, bore brushed and all that stuff....
It's pretty easy to chip a razor blade and where you think that ends up , that's why carbide is my go to.