Polyethylene Terephthalate (PET) is a durable material with either a glossy appearance or opaque appearance depending on its crystallinity. PET is one of the most common plastics in the world, used in cases like sailcloth, water bottles, and clothes. In the world of 3D printing, PET is often used in the form of PETG which contains glycol. PET and PETG fill a role between PLA and ABS being a tough material and relatively easy to work with. With the rise of pellet printing, PET is growing in relevance as a 3D printing material. PET is also one of the most commonly recycled plastics, making its potential use in 3D printing even more attractive. For those looking for durable parts and a closed loop 3D printing solution, PET is a great material to use.
PET excels when you take advantage of its material properties and its prevalence. Its material properties allow it to perform well in a variety of applications. Its prevalence also makes it a great candidate for recycling and closed loop use cases.