SLA Resins — Precision 3D Printing with a Smooth Surface Finish
SLA (Stereolithography) printing uses a UV laser to cure liquid photopolymer resin layer by layer, achieving precision down to 25 μm — far exceeding FDM printing. The result is parts with smooth surfaces, sharp details, and virtually invisible layer lines.
We print SLA on Formlabs printers with five resins. Three general-purpose Standard resins — White, Grey, and Clear — cover presentation models, concept reviews, and transparent parts. Two engineering resins step up the performance: Tough 2000 matches the strength and toughness of ABS, while Rigid 10K is a glass-filled resin with extreme stiffness and a 238 °C heat deflection temperature.
SLA is the right choice when you need a high level of detail and a smooth surface — presentation prototypes, parts with fine features, transparent components, jigs and fixtures, and engineering parts under mechanical or thermal load. Pick a specific resin below, or upload your model to our instant calculator — the only instant SLA quoting tool in Croatia.
Our work
Real parts 3D printed in our workshop, from functional brackets to multicolor promotional keychains.
Properties
- Technology
- SLA (Stereolithography)
- Printer
- Formlabs Form 3L / Form 4
- Strength
- Medium to High (resin-dependent)
- Flexibility
- Low to High (resin-dependent)
- Precision
- Down to 25 μm
- Surface Finish
- Smooth, nearly invisible layers
Advantages
- +Exceptional precision and detail (down to 25 μm)
- +Smooth surface with no visible layer lines
- +Five resins — three Standard, two engineering
- +Transparent parts possible with Clear Resin
- +Engineering resins as strong as ABS
Disadvantages
- −Higher cost than FDM printing
- −Requires post-processing (washing and UV curing)
- −Fewer colour options than FDM filaments
- −Standard resins can be brittle
- −Sensitive to prolonged UV exposure
Use Cases
- Presentation and concept models
- Parts with fine features and detail
- Transparent enclosures and optical parts
- Functional and engineering prototypes
- Jigs, fixtures, and tooling
Print with Resin (SLA)
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