Inside The Machine Shop January 20, 2017 by Arsenal Discs Take a look as we show you inside the machine shop while building our prototypes! By using Vernier Calipers, we carefully measured and recorded prototype dimensions. By using high quality CAM software, we successfully CNC machined our final prototypes. Our prototypes were created with state-of-the-art machining equipment. By utilizing high-tech software, we successfully ran simulations and tests to optimize disc performance. This was an early stage CAD drawing of the .50 Cal. After many rounds of prototyping, the geometric design has changed drastically.