Prusament PETG Tungsten 75% is highly specialized filamentdesigned mainly for radiation shielding purposes. Tungsten powder inside the PETG filament is a heavy metal that does not react with water, oxygen, or with room temperature air.Unlike lead, tungsten is hypoallergenic and non-toxic, which makes it perfectly suitable for medical applications.
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.
Because of its atomic number, tungsten can be used in various applications asx-rays and gamma-ray radiation-shielding material.
Materials with such high density are generally very difficult to machine, can be very expensive, or even toxic. These materials' inherent properties make the classic manufacturing methods undesirable. However, bonding the metal powder with polymers suitable for 3D printing provides the potential tocreate complex/individualized shielding components more easily and sometimes at a reduced cost.
There are a number of areas where radiation shielding filaments may be used. This includes for example the aerospace, nuclear energy industry, non-destructive testing, x-ray imaging devices, etc.
Print preparation
It is necessary to use a hardened steel nozzle.Tungsten powder is ahighly abrasive materialand may damage a brass nozzle.
Powder-coatedSatin or TXT sheetprovides 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 cleaneron 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 andmay 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
Nozzle
260±10°C
Heatbed
80±10 °C
Basic Attributes
Radiation shielding material
High-density material (less meters of filament per 1 kg)
Good chemical resistance
Higher price
Non-reactive
Requires a hardened nozzle
Non-toxic
Not suitable for sintering
Hypoallergenic
Highly attractive metallic grey surface
Easy to print
Easy postprocessing (can be polished as other metal-filled materials)
Notes
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.
