What can you expect? Prusament PETG is our own in-house made filament. The whole manufacturing process is closely monitored and tested - we guarantee ±0.02mm precision and highly-consistent colors. You can inspect parameters of every spool we made at prusament.com . Check the sample spool ! Manufactured In-House By Josef Prusa We were not satisfied with the quality of filaments on the market. So we decided to make our own! Prusa Research is the only 3D printer manufacturer with its own filament production. Premium-Grade Materials And Thorough Testing The whole manufacturing process is closely monitored and tested – string diameter, color consistency, and mechanical properties – to make sure that every spool is perfect. ± 0.03 mm Manufacturing Guaranteed Precision We believe the industry standard of 0.05 mm isn’t sufficient for perfect 3D printing. Instead, we guarantee ±0.03mm precision and highly-consistent colors in our filaments. High Quality You Can Check Yourself We are the only manufacturer that gives the option to inspect parameters of every filament spool. Scan a QR code on the spool to see all details online ( check the sample spool ). Read more about Prusament in the article at blog.prusa3d.com or Prusament.com ! --> About Prusament PETG Tungsten 75% Prusament PETG Tungsten 75% is a highly specialized filament designed mainly for radiation shielding purposes. Tungsten (also known as wolfram) powder inside the PETG filament is a heavy metal that does not react with water and is resistant to oxidation at room temperature. Unlike lead, tungsten is hypoallergenic and non-toxic. This makes it perfectly suitable for creating complex X-ray and gamma-ray radiation-shielding components (not only for medical applications) in an easier and faster way compared to conventional methods. Find out more about Prusament PETG Tungsten 75% and its uses in the announcement article. Print preparation It is necessary to use a hardened steel nozzle. Tungsten po