Castable 3D printed part — SLA specialty material
SLA
Specialty

Castable

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

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

Material spec

Investment casting patterns for jewelry and metal parts production.

Clean burnoutFine detailSmooth
Strengths
Clean burnout for investment casting
Fine detail for jewelry
Smooth surface finish
Limitations
Extremely brittle — handle with care
Only useful for casting patterns
Requires burnout oven
Colors
Purple
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

Castable is available on our and services. 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.

Hardware Development

Iterate on enclosures, brackets, and assemblies without waiting for tooling.

Product Design Validation

Test form, fit, and function with production-grade materials before committing.

Investor Samples

Presentation-quality parts that look and feel like the final product.

Pre-Production Testing

Validate tolerances, material behavior, and assembly flow at low volume.

Jigs and Fixtures

Custom tooling for your production line — printed and delivered in days.

04

Design guidelines

Guidelines

Recommended parameters when designing parts for Castable 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 Castable 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 Modulus0.22 GPa
Tensile Strength (UTS)12 MPa
Elongation at Break13%
Impact Strength (Izod)12 J/m
HardnessShore D 76
Density1.1 g/cm³

Physical & thermal

Heat Deflection (HDT)55°C @ 0.45 MPa
Surface Roughness1 Ra μm
Min Layer Height25 μm
Light TransmissionOpaque
Max Build Dimension145 mm
04

Other SLA materials

All SLA
Standard Resin — SLA 3D printing material by Makelab

Standard Resin

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

Grey Pro Resin — SLA 3D printing material by Makelab

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 4K — SLA 3D printing material by Makelab

Rigid 4K

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

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.

06

Compare Castable with others

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