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Prusament PETG Tungsten 75% (100g)

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 Check the sample spool!

Prusament extrusion line

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.

Prusament polymer granulate

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.

Laser device for measuring Prusament quality and tolerance

± 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.
Prusament quality specs on

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).

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 powder is a highly abrasive material and may damage a brass nozzle.

Powder-coated Satin or TXT sheet provides good adhesion. Clean it with IPA (available in drugstores, for example) which works great not only with Prusament PETG Tungsten 75% but with other materials too.

Pour a small amount of IPA on a paper towel and use it for cleaning the surface. To achieve the best results, clean the surface while it’s cold. Keep in mind that higher temperatures will evaporate the alcohol before cleaning the surface. Also, don’t forget that the heatbed preheated for printing Prusament PETG Tungsten 75% has a high temperature (80 °C) and may burn you if you touch it! Another possibility is cleaning the surface with warm water and a few drops of dish cleaner on a paper towel. You can also use denatured alcohol.

We don’t recommend printing with Prusament PETG Tungsten 75% on a smooth PEI sheet. This material adheres greatly to the PEI surface and may cause damage to it. This type of damage is not covered by the warranty. If you need to print on a smooth surface, spread a thin layer of paper glue stick on it.

Printing Setup

Heatbed80±10 °C
Recommended print sheetTextured / Satin
Before printing, learn about print surface preparation in our dedicated article and material table.

Download printing profiles for Prusament PETG Tungsten 75% (MK4, XL)

For optimal printing download the config bundle or turn to the material datasheet

Basic Attributes

Radiation shielding material
Good chemical resistance
Visually appealing metallic grey surface
Easy to print
Easy postprocessing (can be polished as other metal-filled materials)
Requires a hardened nozzle
Lower toughness compared to Prusament PETG
High-density material (less meters of filament per 1 kg)
Not suitable for sintering
Higher price

Beginners tips & tricks

It is necessary to use a hardened steel nozzle. Tungsten powder is a highly abrasive material and may damage a brass nozzle.

You can find more in-depth printing tips in our article at and in our Material table.


Prusament PETG Tungsten 75% is made in-house by Prusa Research.

The Prusament PETG Tungsten 75% 100g sample is approximately 10 meters long.

This 1.75mm filament has a manufacturing tolerance of ± 0.03 mm.

Before printing, make sure the surface of heatbed is clean as described in 3D Printing Handbook.

To dry the filament, please follow the instructions in our article.
In stock

Preparation time: 1-3 business days.


Why the Original Prusa 3D Printer?

  • 1

    Great Support

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  • 2


    If you buy our 3D printer, you can upgrade it later to the new version, no need to buy a new model.

  • 3

    Ready to print settings

    In PrusaSlicer you can set everything you want. It's very easy to use and gets new features regularly.

  • 4

    Best Assembly instructions

    Pictured to the smallest detail with all fasteners and mechanical parts having 1:1 drawing.

  • 5

    Fun to Assemble

    Assembling the kit is an excellent first step to the world of 3D printing. Get fun and knowledge!

  • 6

    Quality Garanteed by Josef Prusa

    We operate 700+ printers running 24/7. We need high-quality for our own use – and we design our machines to meet these criteria.



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