Engraving using a rotating cutting tool in a motorized spindle. The tool, or cutter, cuts into the surface of the material to a predetermined depth and produces a groove. Rotary engraving can be performed on a wide variety of materials such as plastic, brass, and aluminum being the most common in the awards industry.
Sandcarving is considered the creation of an artistic outcome onto a material. Sand carving is a technique that etches or engraves images on stone, glass, or metal by wearing away the surface layer(s) of the material.