The Pocket NC Version 2 machines have been tested up to G5 titanium, while it can cut these harder materials it is slow. Ideal materials are aluminum, softer steels, delrin, wax and wood. We do not recommend cutting composites, ceramics, or gemstones as the abrasive dust will get into the bearings and cause pre-mature wear.
The Pocket NC Version 1 can cut wax, plastic, wood, and aluminum. Basically any materials with hardnesses up to that of aluminum.