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Published in Switzerland

KEYWORDS: data exchange, computerized numerical controler (CNC), machine tool, machining, milling, turning, additive manufacturing, GD&T, digital twin, STEP-NC.

This is the fourth edition of AP238. This edition adds three units of functionality: additive manufacturing using powder-bed fusion, drill and fill assembly with digital twins, and broadcast of process state. The document has been harmonized with AP242e4 through shared use of the ISO 10303 resource parts collectively published as SMRLv12.

The Annex K change log describes the changes in detail.