PAC is an amazing process that harnesses the ability of electricity and air (or other gasses) to cut almost anything that conducts electricity. This is a very fast and easy-to-use process that makes it extremely advantageous to production and very versatile for CNC tables and other mechanized operations. The process’ drawbacks are its portability and startup cost, but from then on a PAC system is extremely easy to maintain and low-cost to run. This chapter also covered safety concerns inherent to working with PAC. Welders will want to have a firm understanding of PAC, as they are likely to see it often throughout their careers.