True Cast Resin

Precision casting made simple – with reliable results, every time 

Formlabs True Cast Resin is a wax-filled material engineered for consistent, high-fidelity casting of parts up to 5 mm thick. From finely detailed jewelry to small engineering components, it’s designed to deliver smooth surface finishes, sharp details, and clean burnout—without the hassle.

Compatible with a wide range of burnout schedules and investment materials, True Cast Resin offers low thermal expansion, minimal shrinkage, and an industry-leading ash content of just 0.03%. Whether you’re casting with gold, silver, brass, or even platinum*, this material provides the consistency and control professionals rely on.

Why Choose True Cast Resin?

Trusted detail and dimensional accuracy

• Designed for medium to heavy jewelry, signet rings, medallions, and small engineering parts

• Not ideal for delicate filigree—use Castable Wax Resin for those designs

Clean burnout, minimal residue

• Only 0.03% ash content

• 174.1 µm/m/°C thermal expansion

• Minimal shrinkage and low investment stress

• Compatible with common burnout cycles (e.g., Prestige Optima)

Fast, flexible workflow

• Prints up to 4x faster than Castable Wax Resin

• Validated for 0.025 mm and 0.050 mm layer heights on Form 4

• Compatible with 3rd party DLP and LCD printers (0.030 mm)

Tailored for casting professionals

• Available in Formlabs cartridge (Form 4) and 500g bottle (open mode)

• Reliable print performance and forgiving casting behavior

• Printed parts remain castable for up to 6 months post-processing

Simple post-processing

• Fast IPA wash + optional cure (3–10 mins)

• No full color change required for cast success

• Smooth integration into existing workflows

*Platinum casting requires specialized materials and expertise due to higher temperatures.

Applications

• Signet rings, custom medallions

• Mechanical miniature components

• Watch bezels and decorative casings

• Any precision part needing clean, detailed casting

Download TDS

Download SDS