PETG is a durable 3D printing filament. Made of glycol-modified polyethylene terephthalate, PETG is chemically resistant, moisture-resistant and can handle temperatures of up to 80°C without warping. As a semi-rigid material, PETG holds fine details well but also flexes during handling without breaking. PETG is a highly transparent 3D printer filament renowned for its exceptional clarity, making it the ideal choice for printing specialized items such as chemical drug bottles. When 3D printing with PETG, you can expect smooth surfaces and minimal warping issues. Consequently, PETG has gained popularity as a preferred 3D printer filament.