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Filamet™ Pyrex is a filament developed by The Virtual Foundry (TVF), a pioneer in the development of filaments that, with a post-processing process using sintering, allow us to obtain completely metallic or ceramic parts, while maintaining the natural properties of the materials.
Filamet™ Pyrex is a filament composed of 73% borosilicate glass powder and the rest PLA, the first glass filament developed by The Virtual Foundry.
This filament uses the renowned Pyrex glass, a tempered borosilicate glass that is noted for its low thermal expansion, which makes it resistant to temperatures of between -40°C and 600°C and thermal shock of up to 220°C. Although this glass is known for its applications in oven-safe cookware, its main application is in the scientific and industrial field, such as the manufacture of laboratory glassware or the production of mirrors for telescopes. Pyrex glass is composed of 80% silica, 13% boron, 4% sodium carbonate and 2.5% alumina.
Thanks to its PLA content, this filament is very easy to print, as its printing properties are similar to those of PLA, allowing any FDM 3D printer user to produce parts with this material.
Once a part has been printed, it is necessary to carry out the sintering process, in an open environment or in a vacuum or inert environment, bearing in mind that the sintering values must be adjusted according to the geometry and furnace model. The product obtained is totally ceramic, but with certain porosity and a reduction in volume due to the loss of PLA.
Currently, a large list of industry sectors are using the various filaments developed by The Virtual Foundry: 3D printer manufacturers, biomedical innovation, jet engine development, radiation shielding, space exploration, nuclear energy, dental, artists or fashion design. One notable application is the manufacture of an internally heated hot water drill bit for drilling in Antarctica. With copper Filamet™, a drill bit with an internal structure that is extremely difficult to machine or mould has been manufactured very easily and at low cost. Another notable application is the printing of radiation shielding containers using tungsten Filamet™. Such containers are used to transport reagent medicines without having to resort to (toxic) lead containers.
The Filamet™ Pyrex filament allows any FDM 3D printer user to produce pure borosilicate glass objects, capable of withstanding temperatures of up to 600ºC. Once sintered in a furnace, the result of 3D printed parts made from this material is 100% glass. The final parts are not transparent.
Metallic content | Metallic content |
It is necessary to use a nozzle with a diameter of at least 0.8 mm to avoid clogging. With practice it is possible to print with smaller diameter nozzles.
As far as infill, the average recommended amount is 30-70 % but it largely depends on what kind of part the user wants to obtain and whether the part will be sintered or not. For more indepth information please watch this video:
This filament should be printed at 225 ºC and a flow rate of 135%. It is recommended to place the spool just above the extruder.
It is recommended to print at low speeds of up to 30 mm/s.
Materials needed:
Metallurgical furnace.
Step 1: Placement of the part
Fill the crucible with refractory powder.
Step 2: Thermal Debind.
Heat up to 204 ºC.
Step 3: Sintering
Heat up to 843 ºC at a rate of 2 ºC/min.
Step 4: Cooling
Allow to cool to room temperature.
General information | |
---|---|
Manufacturer | The Virtual Foundry (USA) |
Material | Borosilicate glass PYREX |
Format | 500 g spool |
Density | 1.5 g/cm3 |
Filament diameter | 1.75 mm |
Diameter Tolerance | - |
Filament length | ±138 m (Ø 1.75 mm-0.5Kg) |
Colour | Whitish |
RAL/Pantone | - |
Printing properties | |
Printing temperature | 225 ºC |
Base/bed temperature | 40-50 ºC (optional) |
FilaWarmer temperature | Not necessary |
Chamber temperature | - |
Layer fan | - |
Print speed | 30 mm/s |
Nozzle diameter | ≥0.8 mm |
Infill recommended | 100 % |
Sintering properties | |
Container | Refractory Crucible |
Refractory powder | Anyone who can withstand the temperature |
Maximum temperature | 843 ºC |
Mechanical properties | |
Izod impact resistance | - |
Charpy impact resistance | - |
Elongation at break | - |
Tensile strength | - |
Traction module | - |
Flexural strength | - |
Bending module | - |
Surface hardness | - |
Thermal properties | |
Softening temperature | 55 ºC |
Melting temperature | - |
Specific properties | |
Transparency | Opaque |
Radiation protection (unsintered) | No |
Further information | |
HS Code | 7406.1 |
Spool diameter (outside) | 300 mm |
Spool diameter (inner hole) | 65 mm |
Spool width | 55 mm |
* The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend that you confirm the results and final properties with your own tests. For further information, please refer to the product data sheet.
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