<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">computer numerical control machining</topic></authority><related type="other"><topic>computer numerical control machines</topic></related><related type="broader"><topic>subtractive processes and techniques</topic></related><variant type="other"><topic>CNC machining</topic></variant> <note xml:lang="en"><![CDATA[ A subtractive manufacturing process which typically employs computerized controls and machine tools to remove layers of material from a blank, and produces a custom-designed part. The basic process includes designing the CAD model, converting the CAD file to a CNC program, preparing the CNC machine, and executing the machining operation. It is suitable for a wide range of materials, including metals, plastics, wood, glass, foam, and composites, and encompasses different operations including mechanical, chemical, electrical, and thermal processes.  ]]></note></mads>