Additive manufacturing (AM), or 3D printing, is one of the latest and most sensational developments in manufacturing since the industrial revolution. The technique is mainly based upon ‘layer-by-layer ...
SALISBURY — It was U.S. Patent No. 2,628,465, and it changed the life of Ralph Penley Sr. “It’s a mechanical marvel, what he did,” grandson Bill Penley says today. Back in the early 1950s, Ralph ...
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