Fine irregularities in the surface texture of a material, usually including those resulting from the inherent action of the production process. Surface roughness is usually reported as the arithmetic roughness Ra and is given in micrometers or microinches.
The Fabricator Blog
Still Building America—Pablo Guerrero’s art and ancestry - by Josh Welton Starting your own business isn’t for the faint of heart. It helps if you are inspired by an ancestor who did the same. Here’s the story of how Pablo Guerrero made his own mark while honoring his grandfather.
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