Overview: Addressing companies that make the transition from the routing of wood or aluminum to the machining of plastics, the paper details a number of preliminary procedures and considerations that can help ease the conversion and ensure a smooth transition. The paper outlines the periphery factors in the routing of wood and aluminum which can become the most significant aspects of plastics machining, where good planning and preparation help ease these factors, and the costs associated with the startup of a new machining process. First of a two part series, it underlines the need for active preparation when making the transition from wood routing to plastic routing, and covers the CNC router and its associated hardware. Vital steps for preventative maintenance of CNC routers are listed, while some recommended factors that should be considered before machining plastics including run out, collets, vacuum, dust collection, and coolant are suggested.