Formlabs High Temp Resin (Form 3) - 1L is a specialist engineering material offering the highest heat deflection temperature (HDT) of any Formlabs resin. Engineered for applications requiring extreme thermal stability, this material can withstand temperatures up to 289 °C at 0.45 MPa. Consequently, it is the primary choice for engineers producing static components for high-heat environments, such as mould tooling, hot air and gas manifolds, and heat-resistant housings for electronic assemblies.

Thermal Performance of Formlabs High Temp Resin (Form 3) - 1L

Furthermore, the mechanical integrity of this resin is maintained even when subjected to intense thermal stress. With a post-cured stiffness of 3.3 GPa and a Shore Hardness of 80D, the material provides the rigid structure necessary for functional testing where lower-grade polymers would fail or deform. The high Tensile Modulus ensures that parts maintain their dimensional accuracy whilst exposed to heat, which is vital for precise fitment in complex mechanical systems.

Processing and Thermal Post-Curing

Utilising Formlabs High Temp Resin (Form 3) - 1L requires a dedicated post-processing workflow to unlock its maximum thermal properties. After a standard wash in Isopropyl Alcohol (IPA), parts must undergo a specific post-cure cycle: 60 minutes at 80 °C. This intensive thermal treatment is essential to fully cross-link the polymer chains, achieving the 289 °C HDT and ensuring the part remains stable during professional engineering applications.