... whether hardened, or not.)Copper, Brass, Aluminum: They are a cinch!brittle materials like glass, ceramic, quartz, stone.laminatesflammable materialsMake ... the machine. Make a part, then 2 minutes be making a completely different part from a completely different material.Leaves a satin smooth finish, ... to learn.You can trade off tolerance vs speed from feature to feature on your part.Can easily switch ...