I have carbide inserts from scrap snow plows and from an implement dealer...they were replacing the carbide cutters on the big road graders. Holy hell I almost took this stuff in as steel... How do I separate the carbide from the steel...it's like brazed in or something I can't get that kind of heat on the whole thing...my grandfather said to just gouge the face out with a torch because the carbide doesn't melt...is that true?