Formlabs Rigid 4000 Resin (Form 4)

A glass-filled engineering resin for producing stiff, strong, engineering-grade prototypes with a smooth, matte finish — ideal for general load-bearing applications where you need minimal deflection, high dimensional stability, and a reliable workflow on the Form 4 Series.

Formlabs Rigid 4000 Resin (Form 4) cartridge
Category: Engineering
Technology: SLA
Reinforcement: Glass-filled
Behaviour: Stiff & strong
Best for: Load-bearing parts

Important: Mechanical performance depends on correct wash + post-cure. Follow the manufacturer’s validated workflow for best results.

Stiff, strong parts with minimal deflection — with a smooth, professional finish

Formlabs Rigid 4000 Resin is a glass-filled material built for engineering-grade prototypes and functional parts that must stay rigid under load. It’s a dependable choice for brackets, mounts, jigs, fixtures, and thin-walled components where stiffness and dimensional stability matter.

Print parts with a smooth, matte finish that look presentation-ready, while still delivering the stiffness needed for real-world fit checks, functional testing, and production-minded tooling.

Authorised Formlabs Reseller
Optimised for: Form 4 workflow

Why Choose Formlabs Rigid 4000 Resin?

Stiff & Strong with Minimal Deflection

Glass-filled reinforcement delivers rigidity for parts that must hold shape under load and torque.

Dimensional Stability for Fit & Function

Ideal when you need stable geometry for assemblies, fixtures, and production-minded prototypes.

Smooth Matte Finish

Produces parts that look clean and professional — great for customer samples and internal sign-off.

Reliable Engineering Workflow

A proven choice for everyday load-bearing applications and functional tooling.

Applications

Rigid 4000 Resin is built for stiff, strong parts where you want dependable mechanical performance and a great surface finish.

Consider Rigid 4000 Resin for:

  • Mounts and brackets that must resist bending
  • Jigs and fixtures for repeatable positioning and assembly
  • Thin-walled parts where stiffness is critical
  • General load-bearing prototypes for fit, function, and stability testing

Tip: Add fillets and avoid sharp internal corners to reduce stress concentration in stiff, glass-filled materials.

Workflow Overview

Rigid 4000 Resin uses a standard print + wash + post-cure workflow. For intended stiffness and stability, follow the manufacturer’s validated settings and post-processing steps.

  • Print using the Rigid 4000 preset for your Form 4 printer.
  • Wash using the validated cleaning method and timings.
  • Post-cure using the validated cycle to achieve full mechanical performance.
  • Finish (support removal, light deburr) while protecting critical mating surfaces.

(70854)

SKU 70854
Brand Formlabs

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