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  • Filamet Amaco X-23 View larger

    Filamet Amaco X-23

    The Virtual Foundry

    New product

    4 Items

    89,00 €
    89,00 €

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    Filament with 40% of Amaco X-23 ceramic powder Allows to create completely ceramic pieces after a sintering heat treatment.

    Filamet™ Amaco X-23 of The Virtual Foundry (TVF) is an innovative filament composed of 40% ceramic and the rest by PLA. The Virtual Foundry is an American company made up of great experts in the cast metal sector, who have been working constantly since 2014 to improve and grow their range of filaments and accessories for 3D FDM printing on metal and ceramics. Their products are aimed at solving and simplifying problems through innovative metal and ceramic materials for 3D FDM printers of any kind.

    Engranaje fabricado con cobre sin sinterizar

    Picture 1: Gear made of unsintered Amaco X-23. Source: Saphire

    Amaco X-23 is a clay powder produced by the prestigious American Art and Clay Company. It is a natural gray clay that presents a soft cream color after baking.

    The Virtual Foundry has been the pioneer in developing the metallic and ceramic filaments for 3D printing after many years of research and development. The great competitive advantage developed is that to obtain the pure metallic pieces it is only necessary to print the piece and sinter it in a furnace. Other manufacturers who have tried to develop metallic filaments need to do an additional process (prior to sintering in the furnace): debinding, a chemical process to separate the binder polymers from the metal. Therefore, it can be concluded that The Virtual Foundry is the pioneer and the reference in 3D FDM metallic printing, obtaining a moderately simple process with results never seen before in the world of metal manufacturing.

    Currently, a large list of industry sectors are using The Virtual Foundry's filaments: 3D printer manufacturers, biomedical innovation, jet engine development, radiation shielding, space exploration, nuclear energy, dental, artists or fashion design. A remarkable application is the manufacture of a drill with internal heating by hot water, for drilling in Antarctica. With the copper Filamet™ a drill with an internal structure that is extremely difficult to mechanize or mold has been manufactured very easily and at a low cost. Another remarkable application is the printing of containers for radiation shielding, made with the tungsten Filamet™. This type of containers are used to transport reactive medicines without having to resort to lead (toxic) containers. Thanks to the density of tungsten, 1.6 higher than lead, this filament is ideal for creating any type of replacement part for those made of lead.

    Filamet™ Amaco X23 is a filament formed by ceramic clay dust and a biodegradable and ecological polymer (PLA). This material is free of exposed ceramic particles and volatile solvents that can be released during printing. Formed by 40% of Amaco X-23 clay and the rest by PLA, this material is extremely easy to print, since its printing properties are similar to those of PLA, allowing any user of a 3D FDM printer to create pieces with this filament.

    Once a part is printed, it is necessary to perform the sintering process, in an open environment or in a vacuum or inert environment, to remove the polymer (PLA), taking into account that the sintering values must be adjusted according to the geometry and model of the furnace. The product obtained is totally ceramic, but with a certain porosity and a reduction in volume due to the loss of PLA.

    Printing tips

    It is necessary to use a hardened nozzle of at least 0.6 mm diameter to avoid clogging.

    It is advisable to print on a glass base and use an adhesive such as Magigoo. It is not possible to print directly on PEI bases, as the part could get welded to the base and the base would be damaged. If you have a PEI base, we recommend applying a layer of Blue Tape.

    It is recommended to print at low speeds up to 30 mm/s.

    Sintering process

    Necessary materials:

    • Metallurgical furnace.
    • Refractory Crucible
      Refractory powder

    Step 1: Placing the piece

    1. Fill the crucible with refractory powder.
    2. Immerse the piece in the refractory powder making sure to leave a gap of at least 15 mm between the surface of the piece and the walls and upper and lower parts of the crucible. The refractory powder must not be compacted.
    3. Place the crucible in the furnace.

    Step 2: Thermal debind.

    1. Heat up to 204 ºC.
    2. Keep at 204 ºC for 2 hours.
    3. Heat up to 427 ºC at a speed of 1.86 ºC/min
    4. Keep at 427 ºC for 3 hours.

    Step 3: Sintering

    1. Heat up to 649 ºC at a speed of 1 ºC/min
    2. Heat up to 1232 ºC at a speed of 2 ºC/min
    3. Keep at 1232 ºC for 4 hours*.

    Step 4: Cooling

    1. Allow to cool to room temperature.
    * Recommended time for a cube up to 50mm. For larger pieces it will be necessary to increase the time.
    General information
    Manufacturer The Virtual Foundry (USA)
    Material Amaco X-23 (40 %wt) + PLA 
    Format 500 g roll
    Density 0.8-1.3 g/cm3
    Amount of metal (volume) 66 %
    Quantity of metal (mass) 40 %
    Filament diameter 1.75 or 2.85 mm
    Diameter Tolerance -
    Filament length -
    Colour Grey
    RAL/Pantone  -
    Printing properties
    Printing temperature 205 - 215 ºC
    Base/bed temperature 50 ºC (optional)
    FilaWarmer temperature Not necessary
    Chamber temperature -
    Layer fan  -
    Print speed 30 mm/s
    Nozzle diameter ≥0.6 mm of hardened steel
    Infill recommended 100 %
    Sintering properties
    Container Refractory Crucible
    Refractory powder Any
    Maximum temperature 1232 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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