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  • Form 2/Form 3 Castable Resin (FormLabs)


    This product could be delivered in a period exceeding the standard.

    New product

    249,00 €tax excl.
    301,29 €tax incl.

    Ask for information

    Enhance the work of jewelers more quickly and economically than with traditional methods.

    Resin Castable is the help that every jeweler needs to make his creations directly from his 3D design. From CAD software you can print the desired design with the Form 2Form 3 or Form 3L 3D printer and within a few hours have a prototype to cast directly.

    Castable Resin

    Image 1: Castable Resin. Source: FormLabs

    All the pieces that are printed with the Castable Resin get the perfect qualities for casting:

    • High precision: The precision of the laser of the FormLabs printers is able to realize precise and clear details that transmits to the piece fineness and very detailed tips.
    • Great finish: Thanks to 25 and 50 micron layer heights, an ultra smooth surface finish is achieved, which means less metal loss and less polishing of the casting later on.
    • Opaque Resin: The wax-like appearance of Castable Resin highlights the finer details and thus helps verify the prototype before melting.
    • Low cost: The platform of the Form 2 allows printing up to 50 rings at a time with a material cost of only 0.10€ per ring, something totally unthinkable with other traditional methods.

    Print 50 rings at a time

    Image 2: Print 50 rings at a time. Source: FormLabs
    • Burning performance: FormLabs has specifically developed this resin free of ash and residues subsequent to the investment casting process. Castable resin is optimized to provide the best burning performance, but the specific melting process must be adjusted by each user.

    Burnout Curve of Castable Resin

    Image 3: Burnout Curve of Castable Resin. Source: FormLabs

    Video 1: 3D printed jewelry with Castable Resin. Source: FormLabs

    For all the above, the Castable Resin in combination with the Formlabs 3D printers is the essential tool for every jeweler or producer of metal parts of great detail to make parts in the fastest, simplest and most profitable way. To know how to perform the whole process, visit the section on usage tips.

    Video 2: How to make jewelry with Castable Resin. Source: FormLabs

    Due to the great demand of this type of resin by jewelers, Formlabs has developed a material for more demanding users: Castable Wax. This moldable resin contains 20% wax to provide a safe casting without ash remains, a smooth and precise finish at levels of such high power that high-end jewelry elements can be created. Castable Wax offers enough strength for handling without the need for curing.

    Great finish

    Image 4:Great finish. Source: Formlabs

    In jewelry, pieces stand out according to their complexity and superficial quality, making it essential for a jeweler to surprise his clients with creations of incredible and innovative details. The resin Castable Wax (20% resin) in combination with the 3D SLA printer Form 2Form 3 or Form 3Lfacilitates and speeds up the manufacture of pieces of jewelery by offering an easy and clean casting of such incredible elements as this bracelet:

    Bracelet printed with Castable Wax

    Image 5: Bracelet printed with Castable Wax. Source: Formlabs

    Hide color variations (Hide color variations)

    Next we explain the necessary steps to obtain the final piece from the 3D model in CAD with Castable resin and Castable Wax:

    1. Print the piece

    Once you have chosen the pieces you want to make, you import the files into the FormLabs lamination software (PreForm), where you simply need to select Castable Resin and layer height, import the files, generate the supports and start the printing.

    Print the piece

    Image 1: Print the piece. Source: FormLabs

    2. Cured (Castable resin only)

    Once the pieces of IPA Isopropyl Alcohol (Form Wash) have been removed and allowed to dry, the pieces must be cured for 120 minutes in the Form Cure at 45º C to reach their maximum mechanical and melting properties.


    Image 2: Cured. Source: FormLabs

    3. Wax tree

    With the pieces already cured, the supports can be removed, always with great care. To achieve total elimination of the support and a perfect finish you can use sandpaper (grain 400 or higher) or even a rotary tool with a polishing attachment. The placement points of the wax deposits are made in the same way as for the case of lost wax.

    Remove supports

    Image 3: Remove supports. Source: FormLabs

    Polish piece

    Image 4: Polish piece. Source: FormLabs

    Tree for laundry

    Image 5: Tree for laundry. Source: FormLabs

    4. Preparation of the mold

    With the base of the drinker connected to a flask, previously wrapped in tape in case of holes, pour the laundry slowly, always on one side of the bottle to avoid damaging the wax tree. Don't forget to perform the degassing process in the vacuum chamber according to the manufacturer's instructions for use.

    Tape to the flask

    Image 6: Tape to the flask. Source: FormLabs

    Pour the laundry

    Image 7: Pour the laundry. Source: FormLabs


    Image 8: Degaussing. Source: FormLabs

    5. Burnout

    The flask is placed in the oven always following the instructions of temperature and time of the manufacturer and then the desired metal is poured for the final piece.


    Image 9: Burnout. Source: FormLabs

    6. Washing and polishing

    After casting, the mold is carefully removed and the investment is washed. Once washed, the pieces are separated, polished and reviewed until the desired finish is achieved.


    Image 10: Washed. Source: FormLabs


    Below, a series of usage tips are cited that must be taken into account at all times with the use of FormLabs resins:

    Change cartridge

    Changing the resin cartridge of the FormLabs printers is very simple, just close the top cap of the ventilation duct (vent) and remove the cartridge by holding it by the handle it has. Then the other is inserted and the vent plug is opened in case an impression is to be started. To avoid drips through the 3D printer, this process must always be carried out with the resin tank mounted.

    Vent plug FormLabs

    Image 1: Vent plug of the FormLabs cartridges. Source: FormLabs

    After finishing each impression the vent plug must be closed so that the resin maintains its properties. In addition, if you don't use the printer for some time, you should keep the cartridge in its original box to keep the properties of the resin intact.

    Resin tank

    Each type of resin must have its resin tank, which must be changed after using 2L of resin. FormLabs has developed a more powerful tank, the Resin Tank LT, which has a life up to 20 times longer than the standard tank.

    FormLabs Resin Tank LT

    Image 2: FormLabs Resin Tank LT. Source: FormLabs

    To protect and store the excess resin in the tank after each printing, FormLabs supplies a lid that ensures a perfect closure. Once the tank is closed, it is recommended to store it (with resin and lid) in the original box so that the resin doesn't lose its properties when exposed to UV rays for a long time. Another point to keep in mind is that the tanks can't be cleaned with any cleaning product or similar (for example, isopopyl alcohol), since they lose certain qualities that can cause continuous failed impressions.

    FormLabs Resin Tank

    Image 3: FormLabs Resin Tank. Source: FormLabs

    Failed printing

    When an error occurs in printing may be because solid parts of a previous printing have fallen to the resin tank. In this case, a spatula at 45° must be passed through the printing tank, gathering all the solid parts in a corner and removing them. To ensure that the tank resin doesn't contain any solid parts, the resin should be cast with a 190 μm paper filter. Once cast, it is put back into the tank and it is ready to be used again.

    Video 1: Clean resin tank. Source: FormLabs

    Isopropyl alcohol

    Isopropyl alcohol is the key to the washing and post-processing of parts and you should know when it is time to change it. In the Finish Kit the moment to change it's when the IPA (Isopropyl Alcohol) is so saturated with resin particles, that after washing the pieces are still sticky. At that point you must remove all the liquid, clean the container well and throw new IPA, but never fill in on the previous one.

    Finish Kit FormLabs

    Image 4: Finish Kit FormLabs. Source: FormLabs

    In the Form Wash, the wash center itself indicates through its screen when it is time to change the isopropyl alcohol.

    Video 2: FormLabs Ecosystem. Source: FormLabs

    If you wish you can contract our SLA 3D printing training courses (online or in person) by contacting us through the contact form. The training is oriented to obtain a wide knowledge and know how to use the 3D SLA FormLabs printers from the beginning and t.hus avoid major errors.

    General information
    Manufacturer FormLabs (Massachusetts, USA)
    Technology  SLA / LFS
    Material Photopolymer
    Wavelength UV 405 nm
    Format 1 liter
    Color Blue (Castable), Purple (Castable Wax)
    Compatible 3D printers Form 2, Form 3, Form 3L
    Print settings
    Layer height 100-50-25 microns (Castable)
    100-50 microns (Castable Wax)
    Exposure Time It is not necessary to configure the printing parameters in the Formlabs printers. The chip incorporated in the resin cartridges detects the type of material by configuring the printing automatically.
    Off time
    Lifting height
    Bottom exposure
    Bottom layers
    Curing and washing properties
    Washing time (FormWash) 10 min
    Curing time (FormCure) Castable: Curing not necessary
    Castable Wax: 240 min / 60ºC
    Mechanical properties 
    Izod impact strength -
    Charpy impact strength -
    Elongation at break  -
    Tensile strength  -
    Tensile Modulus -
    Flexural strength  -
    Flexural modulus -
    Surface hardness -
    Thermal properties 
    Softening temperature -
    Additional Information
    Lifetime (since manufacturing) 18 months
    HS Code 2916.1

    * 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 confirming the results and final properties with own tests. For more information you should consult the technical data sheet of the product.

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