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SLA · Stereolithography

Stereolithography (SLA).

UV-laser cures liquid resin with extreme precision. ±0.025 mm tolerance and near-injection-molded surface quality — the benchmark for detail and finish in the industry.

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SLA machine specs
Build Volume1680 × 780 × 580 mm
Tolerance0.2 mm or 0.2%
Wall thickness0.3 mm min
PrinterUnion Tech SLA
Starting priceFrom $20 / part
Lead time3–4 business days
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Precise
0.025 mm+100% print time

Maximum resolution. Dental crowns, jewelry, and sub-0.5 mm features.

Recommended
Normal
0.100 mmStandard

Excellent detail and smooth surface. Recommended for most SLA applications.

Fast
0.300 mm−55% print time

Quick resin parts for early-stage iteration. Still smoother than most FDM prints.

Resins

6 RESINS
AVAILABLE

Standard Resin
General Purpose
Tolerance: ±0.025 mm$0.55/cm³

Smooth surface finish, good detail. Best for concept models, prototypes, and display parts that don't need high mechanical performance.

Tough 2000
Engineering
Tolerance: ±0.025 mm$0.70/cm³

ABS-like stiffness and impact resistance. Ideal for snap-fit enclosures, brackets, and functional assemblies.

Rigid 10K
Engineering
Tolerance: ±0.025 mm$0.85/cm³

Glass-filled resin with extremely high stiffness. Best for fluid dynamics testing, stiff brackets, and parts that must not flex.

Flexible 80A
Flexible
Tolerance: ±0.05 mm$0.78/cm³

Rubber-like feel at 80A Shore hardness. Perfect for gaskets, overmold prototypes, grips, and wearables.

Castable Wax
Jewelry
Tolerance: ±0.025 mm$1.05/cm³

Designed for lost-wax casting. Achieves an extremely smooth surface for jewelry masters, dental crowns, and fine detail patterns.

BioMed Clear
Medical
Tolerance: ±0.025 mm$1.30/cm³

ISO 10993 biocompatible. For medical devices, surgical guides, dental models, and parts that contact skin or tissue.

Applications

WHAT WE PRINT

Dental Models

Study models, surgical guides, splints, and orthodontic appliances.

Jewelry Masters

Lost-wax casting patterns with sub-millimeter detail.

Medical Devices

Biocompatible surgical tools, anatomical models, patient-specific guides.

Engineering Prototypes

High-tolerance mechanical parts, fluid testing fixtures, and assemblies.

Show Models

Consumer product mockups, presentation models, gallery pieces.

Master Patterns

Silicone mold masters, vacuum forming tools, and casting patterns.