SLAManufacturer image: FormlabsFormlabs Form 3B+
Updated medical and dental LFS laser SLA model with access to Formlabs' biocompatible resin workflow.
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 | 2022 |
|---|---|
| Model family | Form resin · medical and dental |
| 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 | Unknown |
| Regional stock and price | Check the manufacturer |
| Market grouping | Professional · editorial grouping |
Technical specifications
| Laser power (mW) | 250 |
|---|---|
| Layer height (µm) | 25–300 |
| XY positioning resolution (µm) | 25 |
| Print Engine | Low Force Stereolithography (LFS) |
| Layer Control | Adaptive layer thickness |
| Optical Motion | Revised LPU motion control |
| Resin Heating | Updated heating system and temperature sensors |
Layer-height array is a published minimum–maximum range, not every supported discrete setting. XY resolution and 85 µm laser spot are distinct.
What the Plus revision changed
The Plus revision updates optical-unit motion, heating and sensing. Its adaptive layer mode varies slicing thickness with geometry. The manufacturer’s relative speed claims depend on the job and material rather than describing a fixed throughput.
Part removal
The announcement pairs the revised printers with Build Platform 2, which uses a flexible surface for part release. Confirm the platform and resin workflow supplied with a particular used machine or bundle.
Introduced in 2022.
Announced and stated to be shipping globally on January 4, 2022.
Family: Form resin · medical and dental · Historical model
What changed
- Updated LFS components and introduced the Build Platform 2 quick-release workflow for the medical/dental branch.
Read this with the specifications
The current product page says Form 4B succeeded Form 3B+. An exact current sales status is not established. Build size is from the manufacturer's comparison table, not the table's misleading shared 2019 introduction label; the dated 2022 launch release establishes this variant's year. Layer choices and medical suitability depend on material and validated processing.
A larger nominal envelope does not establish better print quality. Fit depends on the configuration, usable area, supports, and orientation.
