The Invisible Differences: Materials That Don't Age

Let’s talk about the clear back panel on your sign. Most customers think "plastic is plastic," but that is where many suppliers cut costs. There are two types of acrylic: Extruded and Cast. Extruded acrylic is cheaper, but it has high internal tension. After a freezing winter or a hot summer, the back of a cheap backlit letter will often crack or shatter due to thermal stress. We refuse to use it. We strictly use Cell Cast Acrylic for every backlit letter we fabricate. Cast acrylic has a relaxed molecular structure, meaning it is harder, clearer, and will never turn that ugly urine-yellow color after years in the sun.