The heat-treating process for reducing brittleness and removing internal stresses and strains in hardened steel. The process consists of heating the hardened parts to the required temperature in a bath of oil, molten lead, or other liquid, and then removing them from the bath and quenching (or cooling) them.
Fabricating a copper chimney cap - by Nick Martin Custom fabricating shops bid all kinds of jobs. Sometimes these jobs involve materials and processes beyond those the shop typically encounters. They make for interesting work that can require brushing up on little-used skills. Building a copper chimney cap was just such a job for Barnes MetalCrafters, one that resulted in a beautiful, functional work of art.
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