son of witless wrote:
I once received some woodworking rasps for free for ordering other tools. When I tried to use them on soft wood all of the teeth broke. They were made in China, but they were for free, right. I had a relative who was a b****smith and he said he would heat treat the remaining rasps to harden them. He tried, but all they did was change color to black. He gave them to his company chemist to see why he could not harden them. The chemist said he had never seen steel with such a high level of sulfur.
When it come to serious pipe fitting, Nothing but American Made Steel will Pass Inspection.