What is the difference between cast and extruded acrylic?
In general, cast and extruded acrylic and both common when used with laser machines. The negatives and positives of GS and XT come it play depending on the job.
Cast acrylic is available in a variety of different colours and is made in thicknesses from 3 to 25 mm. Cast acrylic has a greater thickness tolerance than extruded acrylic. When cast acrylic is laser processed, it has a beautiful mat finish. The edge is crystal-clear and has a clean straight angle where the laser cuts the material.
On the other hand, extruded acrylic is available in less colors and varies in thicknesses between 1.5 and 2 mm (sheets) and 30 µm – 1 mm (films). Compared to cast acrylic, extruded acrylic is cheaper. It's thickness tolerance is lower than GS. 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.