Formlabs Castable Wax Resin (Form 4)

A 20% wax-filled casting resin for ultrafine jewelry and highly accurate dental patterns — clean burnout, smooth surfaces, and a fast workflow with no post-curing required.

Formlabs Castable Wax Resin cartridge
Application: Casting (Jewelry + Dental)
Technology: SLA (Form 4 Series)
Fill: 20% wax-filled
Post-cure: Not required
Burnout: Zero ash (0.0–0.1% TGA)

Workflow note: Castable Wax parts do not require post-curing — wash, fully dry, then cast using a validated burnout schedule for your investment and metal/alloy.

Ultrafine detail, smooth surfaces, and clean burnout — built for casting

Formlabs Castable Wax Resin is a 20% wax-filled material designed for investment casting. It captures intricate features and delivers a smooth surface finish for accurate castings with clean burnout and minimal ash.

With high green strength and stiffness, Castable Wax is ideal for thin, delicate patterns like filigree — while remaining strong enough to handle after printing. Parts are ready after washing, with no post-cure required.

Authorised Formlabs Reseller
Compatible: Form 4 / Form 4B

Why Choose Formlabs Castable Wax Resin?

Clean, Reliable Burnout

20% wax-filled for clean burnout and accurate casting results — ideal when detail and surface quality matter.

Fast, Simple Workflow

No post-curing required. Wash, dry fully, and move straight into investing and burnout.

Ultrafine Detail

High stiffness supports thin, delicate features — perfect for lightweight jewelry and fine filigree geometries.

Smooth Surfaces

Designed for refined surface quality and easy support removal, helping reduce finishing time pre-cast.

Applications

Castable Wax Resin is designed for investment casting workflows where accuracy, fine feature capture, and clean burnout are critical — across jewelry and dental labs.

Consider Castable Wax Resin for:

  • Delicate filigree designs and lightweight jewelry
  • Thin pieces with fine details that require shape retention
  • Direct investment casting patterns
  • Dental casting/pressing patterns (e.g., crowns, bridges, and RPD framework patterns)
  • Custom try-ons and prototypes for production workflows

Tip: For heavier jewelry patterns, consider Castable Wax 40 Resin (higher wax fill) depending on geometry and casting requirements.

Material Properties

Property Value
Ultimate Tensile Strength (green) 12 MPa
Tensile Modulus (green) 220 MPa
Elongation at Break (green) 13%
Temp @ 5% Mass Loss 249 °C
Ash Content (TGA) 0.0–0.1%

*Note: Properties can vary based on geometry, orientation, settings, and temperature. Always follow manufacturer documentation for validated processing and burnout guidance.

Workflow Overview

Castable Wax Resin is designed for a streamlined print + wash + dry + cast workflow. It does not require post-curing.

  • Print using the Castable Wax preset for your Form 4 Series printer.
  • Wash in IPA for the shortest time needed to remove liquid resin (Form Wash setting: 5 minutes in IPA).
  • Dry fully — ensure all solvent has evaporated / been removed before investing and burnout.
  • Do not post-cure (not required). If post-curing is used, slight shrinkage (<1%) may occur and can distort thin parts.
  • Invest + burnout using a validated burnout schedule for your investment and metal/alloy (see the burnout guide below).

Jewelry note: If you’re washing manually instead of Form Wash, follow the burnout guide’s cleaning recommendations before investing.

FAQ

1) What is Castable Wax Resin used for?

Investment casting patterns for ultrafine jewelry (e.g., filigree) and highly accurate dental casting/pressing patterns.

2) Do I need to post-cure Castable Wax parts?

No. Post-curing is not required. Wash and dry fully, then proceed to investing and burnout.

3) What’s the recommended wash process?

Use the shortest wash time that removes surface resin (Form Wash setting: 5 min in IPA). Ensure all solvent is fully removed/evaporated before investing and burnout.

(70789)

SKU 70789
Brand Formlabs

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