PETG (Polyethylene Terephthalate Glycol) is highly sought after for its excellent mechanical strength and resistance to water intrusion and chemical attack. PETG combines some of the good qualities of two other well-known thermoplastic materials used for 3D printing: ABS (acrylonitrile butadiene styrene) and PLA (Polylactic Acid). ABS is known for its durability and PLA for its printability.
PETG, short for polyethylene terephthalate glycol, is an adaptation of PET (Polyethylene Terephthalate). The ethylene glycol in PET is partially replaced with another molecular group, cyclohexanedimethanol (CHDM). The origin of PETG can be traced back to work done by two British scientists, James Dickson and John Whinfield, in the year 1941. PETG is a food-safe material. As a result, it is in demand as a packaging product in the food and beverage industry. PETG is also widely used for retail signage. PETG is cost-effective and less prone to warping compared to materials such as ABS. This article will discuss PETG’s characteristics, composition, recommended printer settings, and comparisons with other 3D printing filaments.
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