Rigid 4K 3D printed part — SLA tough & durable material
SLA
Tough & Durable

Rigid 4K

Glass-filled resin. Very high stiffness and precision. Ideal for molds, jigs, and fixtures.

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Max build size335 x 200 x 300mm
Tolerances±0.2mm
Lead timeFrom 2 business days
Applications
Proto
01

Material spec

Stiff and precise. Best for molds, jigs, fixtures, and turbine-style geometries.

Glass-filledHigh stiffness
Strengths
Very high stiffness (4.1 GPa)
Glass-filled for dimensional stability
Good for molds, jigs, and fixtures
Limitations
Brittle — low impact resistance
Requires post-curing
Limited build volume
Colors
White
02

Performance profile

Flexible
Rigid
0.0030 GPa10.00 GPa
Textured
Smooth
60 Ra μm1 Ra μm
Low Detail
High Detail
500 μm25 μm
Brittle
Impact Resistant
12 J/m220 J/m
Low Temp
Heat Resistant
41 °C238 °C
Soft
Hard
2890
Small Build
Large Build
145 mm1200 mm
03

Applications

Rigid 4K is available on our service. Typical jobs:

Presentation Models

Client-ready visual prototypes.

Design Verification

Snap-fit and assembly validation.

Casting Patterns

Investment casting patterns in Castable resin.

Medical Models

Anatomical models for surgical planning.

04

Design guidelines

Guidelines

Recommended parameters when designing parts for Rigid 4K on SLA.

Wall thickness
0.8mmMinimum recommended wall thickness
Support & overhangs
45°
AlwaysSupport requirements and max overhang angle
Holes
Ø 0.5 mmMinimum hole diameter
Tolerance
±
±0.2mmExpected dimensional accuracy
Minimum features
0.5 mmSmallest printable feature
Clearance
0.125 mmRecommended clearance between parts
05

Post-processing

Standard finishing included with every Rigid 4K order on SLA.

Included (standard)

✓
Support removal— Supports carefully clipped and contact points sanded smooth.
✓
IPA washing— Two isopropyl alcohol bath cycles to remove all uncured resin.
✓
UV post-curing— UV curing chamber completes polymerization for final mechanical properties.
✓
Sanding— Support witness marks sanded flush to consistent smooth matte finish.

Optional (quoted separately)

+
Wet sanding— Progressive wet sanding up to 2000 grit for near-polished surfaces.
+
Polishing— Multi-stage polishing for optical clarity on Clear Resin parts.
+
Assembly— Multi-piece builds bonded with structural adhesive. Seams filled and sanded.
+
Painting / priming— Filler primer and automotive-grade paint for presentation models.

View full post-processing details →

06

Shipping & delivery

Every SLA order ships from our production facility in Brooklyn, NY. Lead time starts at From 2 business days. Enter your zip code to see exactly when parts will arrive at your door.

Local Pickup

Same day, free. Brooklyn facility, Mon\u2013Fri 10am\u20135:30pm ET.

Courier

Same day across all five boroughs and northern NJ.

Nationwide Shipping

UPS Ground, 2nd Day Air, and Next Day Air. Tracked and insured.

All shipping options →
03

Datasheet

Data Sheet

Mechanical properties

Tensile Modulus4.1 GPa
Tensile Strength (UTS)69 MPa
Elongation at Break5.3%
Flexural Modulus3.4 GPa
Flexural Strength105 MPa
Impact Strength (Izod)23 J/m
HardnessShore D 86
Density1.35 g/cm³

Physical & thermal

Heat Deflection (HDT)77°C @ 0.45 MPa
Surface Roughness3 Ra μm
Min Layer Height25 μm
Light TransmissionOpaque
Max Build Dimension145 mm
04

Other SLA materials

All SLA
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Standard Resin

Smooth surface, fine detail. Good for visual prototypes and concept models.

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Grey Pro Resin

High precision, moderate elongation, and low creep. Great for concept modeling and functional prototyping.

Durable Resin — SLA 3D printing material by Makelab

Durable Resin

Polypropylene-like. Flexible, fatigue resistant. Good for snap fits and living hinges.

Tough 2K — SLA 3D printing material by Makelab

Tough 2K

ABS-like toughness with SLA detail. Functional prototypes that need impact resistance.

Tough 1500 — SLA 3D printing material by Makelab

Tough 1500

Polypropylene-like toughness. High impact resistance and flexibility.

Rigid 10K — SLA 3D printing material by Makelab

Rigid 10K

Highly glass-filled. Stiffest SLA material. For precise industrial parts under significant load.

High Temp — SLA 3D printing material by Makelab

High Temp

HDT 238°C. Molds, tooling, and parts exposed to heat.

Flexible — SLA 3D printing material by Makelab

Flexible

Shore 80A. Bendable, compressible. Gaskets, seals, and soft-touch components.

Elastic — SLA 3D printing material by Makelab

Elastic

Shore 50A. Highly elastic and tear resistant. Wearables and skin-contact parts.

Castable — SLA 3D printing material by Makelab

Castable

Burns out cleanly for investment casting. Jewelry and metal part production.

06

Compare Rigid 4K with others

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NextRigid 10K

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