Teletypeguy posted a simple how-to on making chassis overlays with a Cameo:
After finally getting stencils working with my Cameo cutter, I wanted to try making chassis overlays. Over the years I have spent good money getting polycarbonate overlays (7 to 10-mil) with rear silkscreen for connector identification and such, a flood-fill color, backed with 3M 467 adhesive, and die-cut with all the openings and outer shape. It’s a great way to allow multiple overlays to work for different products using a single chassis with a flexible common hole pattern, but pricey.
Via the forum.