This document discusses optimizing design parameters and minimizing nozzle wear on a CNC plasma cutting machine through experimentation. It begins with an abstract discussing recent research in machining and advances in technology. CNC plasma cutting is highlighted as an important non-traditional machining process for its precision, finishing ability, capability to machine hard materials, and complex shape generation. The document then discusses the experimental setup used, including the bed, gas bank, controller, sample material and size. It outlines the methodology, analyzed parameters from the experiments including dimensional accuracy, roughness and material removal rate. Results from different operating parameters from industry, manufacturers, and research are shown. Simulations of nozzle design and specifications are also presented.