For acrylic, it’s important to note there are two types: cast and extruded. Cast acrylic sheets and objects are made from a liquid acrylic that is poured into molds that can be set into various shapes and sizes. This is the type of acrylic used for the awards you see on the market. Cast acrylic is ideal for engraving because it turns a frosty white color when engraved. While it can be cut with a laser, it does not give you flame-polished edges.
The second type of acrylic that you can use with your laser is formed into sheets by a machine and is called extruded acrylic. It is formed through a higher volume manufacturing technique, so it is typically less expensive than cast and reacts differently with the laser. Extruded acrylic cuts cleanly and smoothly and has a flame-polished edge when laser cut. But when it is engraved, instead of a frosted look, you have a clear engraving.
—Epilog
