Filament Polymaker PolyCast Natural [1,75mm, 0.75kg]

Polymaker PolyCast™ Natural: A revolution in foundry and precision casting

Looking for a way to streamline metal casting production? Polymaker PolyCast™ is a unique filament designed specifically for investment casting. Forget expensive molds for wax patterns—with PolyCast™, you can print your model directly on your FDM printer, quickly and at a fraction of the cost.

Key benefits for foundry practice:

Residue-free burning: PolyCast™ evaporates almost completely during mold burning (ash content < 0.003%), ensuring clean and precise metal castings without defects.

Ash-Free™ technology: A special composition ensures that the material does not sublimate as aggressively as conventional plastics at high temperatures, protecting the mold from cracking.

Layer-Free™ smoothing: Thanks to the PVB base, prints can be easily polished with isopropyl alcohol (IPA) or in the Polymaker Polysher™ device. The result is a perfectly smooth surface without visible layers, which is also transferred to the final casting.

Excellent mechanical properties: PolyCast™ is stronger and more stable than PLA or ABS, allowing even large models to be printed without the risk of deformation.

Technical parameters and printing recommendations

Printing with PolyCast™ is very similar to printing with PLA, making it an affordable tool for any workshop.

Property Value

Nozzle temperature 190 °C – 220 °C

Bed temperature 25 °C – 70 °C

Print speed 40 – 60 mm/s

Print cooling On

Spool weight 0.75 kg

Support material PolyDissolve™ S1 (suitable for complex shapes)

How to achieve the best results?

Post-processing: To achieve a "mirror" finish, we recommend exposing the model to isopropyl alcohol (IPA) vapors. This will remove any layer lines that would otherwise be visible on the casting.

Storage and drying: PVB is very susceptible to moisture. For trouble-free printing, we recommend storing the filament in a dry box. If the material becomes damp (sputtering at the nozzle), dry it for 12 hours at 60 °C.

Mold preparation: PolyCast™ is designed to behave predictably during firing and minimize internal stresses in the shell mold.

Mechanical properties (in numbers):

Tensile strength: 37.5 ± 1.7 MPa

Tensile modulus: 1745 ± 151 MPa

Softening temperature (Vicat): 67 °C

Save weeks of development and thousands of dollars on molds. Polymaker PolyCast™ bridges the gap between digital design and traditional foundry casting.