What is the difference between cast and extruded acrylic?
Generally, it can be said that both types of acrylic are equally common in when laser cutting and laser engraving signs and well suited to the application. The respective advantages and disadvantages of GS and XT come into play depending on the application.
Cast acrylic is available in lots of colours, is produced in thicknesses from 3 to 25 mm and has a greater thickness tolerance. Cast acrylic can be laser engraved which results in a beautiful matting. The edge is crystal-clear and has a clean right angle at the point where the laser enters and exits the material.
In contrast, extruded acrylic is only available in limited colours, with a thickness of 1.5 to 25 mm (sheets) and 30 µm – 1 mm (films). Compared to GS, XT is cheaper. The thickness tolerance of extruded acrylic is smaller. As the density of the material is lower, it can be cut faster or with less laser power. The engraving result does not show a visually appealing matting, a sharp ridge occurs at the exit point of the laser during laser cutting.