- Choosing the best PETG Filament for 3d printing.More and more people are discovering the many benefits of 3D printing. One of the most popular materials for 3D printing is PETG filament because it is strong, durable, and easy to work with. However, with so many brands of PETG filament available on the market, it can be difficult to choose which one to… Read more: Choosing the best PETG Filament for 3d printing.