Generally, we perforate .002" to 0.75". There are different machine operations used to perforate materials.   Our all-across high-speed perforating is capable of punching up to 0.25", our CNC punch presses go up to 0.375" and our newest 8kW laser can go up to 1.5".  Of course, these gauges are dependent on the type of material being perforated.  Need perforated metal for a project?  Let us provide a quote.