Durability of PCTG with the advantages of glass fibers. The glass fiber-filled Spectrum PCTG GF10 has resulted in a high-strength filament with an impressively matte surface. During the development of the filament, care was taken to reduce the abrasiveness of the glass fibers. Functionalized glass fibers with a less aggressive geometry are used to minimize wear on the print nozzle. Spectrum PCTG GF10 is a technical filament designed for high stiffness and hardness. Thanks to its extremely high layer adhesion and low shrinkage, large components can be printed. Additionally, the glass fibers give the prints a unique texture, which not only enhances their aesthetic qualities but also improves their usability. Models made from Spectrum PCTG GF10 are used wherever increased adhesion, enhanced durability against cyclic loads, and chemical resistance are important. Applications include visual and functional prototyping, manufacturing safety devices, enclosures and covers, protective components against electrical currents, conceptual models, production of parts exposed to chemical substances, and production tools and fixtures. VERIFY YOUR SPOOL - the most precise quality control system on the market. Filaments for 3D printers are produced using the free extrusion method, which is one of the most challenging extrusion processing techniques due to the significant influence of process parameters on product dimensions and material homogenization. During production, every 1 mm of the Spectrum filament is continuously measured in 2 axes with an accuracy of ±0.8 µm, resulting in a high-quality end product.