Knowledge Base

PCTG (PolyCyclohexylene Dimethylene Terephthalate Glycol) is a close relative of PETG, but it offers better impact strength, clarity, and chemical resistance. It’s a copolyester that combines the ease of printing of PETG with the toughness and stability of engineering-grade materials. If you’ve printed PETG before, printing PCTG will feel familiar — but with improved mechanical performance and less brittleness.

PET-G has become a trusted material for both beginners and advanced users. Known for its toughness, temperature resistance, and ease of use, PET-G strikes a balance between the printability of PLA and the durability of ABS. However, with the demand for stronger and more stable materials rising, filament manufacturers have introduced PETG CF, or Carbon Fiber–Reinforced PETG. By adding carbon fiber strands to PET-G, this material offers a new level of strength, stiffness, and professional-grade quality. But what exactly does carbon fiber change — and when is it worth using PETG CF over standard PET-G? Let’s explore this in depth.