Cutting conditions for 1/2" steel - Laser engineering - Eng-Tips
RE: Cutting conditions for 1/2" steel. LASERNINJA (Mechanical) 18 Mar 16 05:00. Half inch can go either way, water assisted (WACS) or dry. It mostly depends on what your parts look like, geometry, and material. The two choices are a 1.4 mm double and a 2.5 WACS or I guess you could go 3.8 WACS.