Plexiglass molded and extruded
Acrylic glass, or plexiglass, is divided into two types: cast and extruded. Each of them has a different manufacturing process, from which their overall properties also develop. In general, cast plexiglass is mechanically more durable, more flexible, but also more expensive. Both types can be cut by hand or electric saw, blasting, water jet, milling, grinding, drilling and polishing, but for laser cutting, it is more appropriate to cast plexiglass. Extruded plexiglass is susceptible to small cracks due to material stress when laser cutting. They are produced in thicknesses from 2mm to 60mm and 3mm cast sheets even in a wide range of colors, including various finishes, while extruded plates only in a limited color scale - clear, opal and base tinted boards. When using solvent-based adhesives for bonding plexiglass, do not leave any glue marks and the bonded area is virtually not visible. Very good adhesives are therefore based on acetone and chloroform. Specialized companies can be plexiglass and thermoform.
PET-G is most often used in modeling as a glass or water imitation, but also for the construction of whole model objects. It is stiffer than foil and thinner than plexiglass. The minimum thickness is 0,5mm and roughly up to 1mm thick, the boards can be cut by hand with a classic incisor and can be bent arbitrarily without cracking. It adheres very much like plexiglass with solvent adhesives, most preferably with UHU PLAST SPECIAL with a needle applicator. A great advantage is the possibility of heat forming the surface in a vacuum press.