An indentation hardness test using calibrated machines to force a square-based pyramidal diamond indenter having specified face angles, under a predetermined load, into the surface of the material under test and to measure the diagonals of the resulting impression after removal of the load.
The Fabricator Blog
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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