SLAManufacturer image: FormlabsFormlabs Form 3
Desktop laser SLA printer that introduced Formlabs' Low Force Stereolithography system.
Source reviews: 2026-10-16.
Specifications are reported claims, not independent test results.
The details that matter.
Published specifications for this model. Follow a field's source for its configuration and measurement conditions; older fields refer to the profile's reference list.
| Introduction year | 2019 |
|---|---|
| Model family | Form resin |
| Process | SLA |
| Build envelope (X × Y × Z) | 145 × 145 × 193 mm |
| Nominal box volume | 4.06 L · calculated from the envelope |
| Enclosure | Not verified |
| Materials cited in this profile | Photopolymer resin |
| Manufacturer listing status | Listed by manufacturer |
| Regional stock and price | Check the manufacturer |
| Market grouping | Professional · editorial grouping |
Technical specifications
| Machine weight (kg) | 17.5 Sources: Form 4 vs. Form 3/+ |
|---|---|
| XY positioning resolution (µm) | 25 Sources: Form 4 vs. Form 3/+ |
| Print Engine | Low Force Stereolithography (LFS) |
| Light Processing Units | 1 |
| Resin Tank | Flexible film |
| Optics Service | User-replaceable Light Processing Unit |
| Job Management | Remote submission and shared print queue |
25 µm is manufacturer-stated XY positioning resolution; the same source lists an 85 µm laser spot. These are different metrics.
How LFS works
A moving Light Processing Unit uses lenses and mirrors to deliver the laser perpendicular to the build plane. A flexible tank reduces separation forces during printing. Form 3 uses one optical unit, while Form 3L uses two.
Workflow and service
The introduction describes remote job submission, a shared queue, sensing and alerts, and user-replaceable components. These features belong to the LFS generation; they should not be confused with the LCD-based Form 4 print engine.
Introduced in 2019.
Announced April 2, 2019 and available to order then; exact first-shipment date is not established here.
Family: Form resin · Current / announced
What changed
- Introduced LFS with a flexible tank and a modular Light Processing Unit to reduce separation forces.
Read this with the specifications
The current support page lists factory-reconditioned Form 3 units while stock lasts; this is a legacy generation, not a claim of ongoing new manufacture. Current build volume is 145 × 145 × 193 mm. Official guidance says removing taller prints above 185 mm requires removing the tank. Values are current published envelope, not necessarily the launch configuration.
A larger nominal envelope does not establish better print quality. Fit depends on the configuration, usable area, supports, and orientation.
