What is CNC precision machining and how does it work? The CNC machining process uses a solid block of material such as brass, copper or steel. Using numerically controlled tools, it accurately and precisely delivers parts to a very high standard. Lathes, mills, routers, and grinders are tools typically found in CNC machinery. The digital template and autonomous machining practically eliminate human error and achieve accuracy within 1/1000th. The CNC machine is programmed by the operator based on the specifications laid out in the CAD drawings. The programming process generates code which controls the machine to produce the desired finished product. A test run is completed to ensure that there are no errors in the programming. This trial run, called ‘cutting air’ is integral to the machining of top quality finished parts and largely eliminates material wastage and unnecessary downtime. This program can then be used repetitively to create multiple uniform products, all CNC outputs matching the prototype’s exact specifications. Using CNC machinery is also considerably quicker than conventional machining, providing a cost-effective service with a quick turn-around.