
BLAZING FAST
Get more done with most prints in under 2 hours.
Produce stunning parts that always fit, rivaling injection molded parts.
Sharpest Details
Highly collimated light and 50 µm pixel size with pre-tuned anti-aliasing for subpixel resolution
Smoothest Surfaces
Lower peel forces, light touch supports, and 50 µm pixel size with pre-tuned anti-aliasing
Most Accurate Assemblies
±0.15% XY dimensional tolerances so assemblies always fit.

Tackle any problem with our industry-leading materials, or use Open Material Mode.
- General Purpose
- Tough
- Rigid
- Flame Retardant
- Silicone
- Elastic
- Biocompatible
- Polyurethane
- Ceramic
- Castable
- Open Material Mode

Unmatched reliability. Stop coming back to failed prints
Formlabs optimization engineers put hundreds of printed parts to the test to ensure each material performs to the most reliable standards, right out of the box.

Formlabs Form 4 and Form 4B Technical Specifications
Specification | Form 4 | Form 4B |
TECHNOLOGY | ||
Print Technology | Low Force Stereolithography (LFS) with magnetically-stabilized LPU | Low Force Stereolithography (LFS) with magnetically-stabilized LPU |
Laser Type | Single Light Processing Unit (LPU) with custom and replaceable optical path | Single Light Processing Unit (LPU) with custom and replaceable optical path |
Laser Spot Size | 25 microns (0.025 mm) | 80 microns (0.080 mm) |
Wavelength | 405 nm | 405 nm |
PRINTING SPECIFICATIONS | ||
Build Volume | 145 × 145 × 185 mm (5.7 × 5.7 × 7.3 in) | 145 × 145 × 185 mm (5.7 × 5.7 × 7.3 in) |
Layer Height | 25 - 300 microns (0.025 - 0.3 mm) | 25 - 300 microns (0.025 - 0.3 mm) |
Accuracy | ±50 microns (±0.050 mm) | ±100 microns (±0.100 mm) |
Primary Applications | High-resolution engineering parts, jewelry, and small detailed models | Biocompatible medical and dental applications |
Optimized Materials | Standard, Engineering, Jewelry, and Rigid resins | Biocompatible, Dental, and Medical resins |
HARDWARE | ||
Dimensions | 335 × 335 × 520 mm (13.2 × 13.2 × 20.5 in) | 335 × 335 × 520 mm (13.2 × 13.2 × 20.5 in) |
Weight | 17.5 kg (38.5 lbs) | 17.5 kg (38.5 lbs) |
Operating Temperature | 15-30 °C (59-86 °F) | 15-30 °C (59-86 °F) |
Power Requirements | 100-240 VAC, 50/60 Hz, 60 W | 100-240 VAC, 50/60 Hz, 60 W |
SOFTWARE AND CONNECTIVITY | ||
Software | PreForm free print preparation software | PreForm free print preparation software |
File Types | STL, OBJ, FORM | STL, OBJ, FORM |
Connectivity | Wi-Fi, Ethernet, USB | Wi-Fi, Ethernet, USB |
User Interface | 5.5" color touchscreen | 5.5" color touchscreen |
RESIN SYSTEM | ||
Resin Capacity | 750 mL | 750 mL |
Resin Compatibility | Formlabs Standard, Engineering, Jewelry, and Rigid resins | Formlabs Biocompatible, Dental, and Medical resins |
Resin Storage | Automated resin system with cartridge recognition | Automated resin system with cartridge recognition |
CERTIFICATIONS | ||
Safety | CE, FCC, KC, RoHS, WEEE | CE, FCC, KC, RoHS, WEEE, Medical compatibility |
Medical Certifications | None | Compatible with medical device standards |
POST-PROCESSING | ||
Recommended Accessories | Form Wash, Form Cure | Form Wash, Form Cure |
Software Ecosystem | PreForm, Dashboard | PreForm, Dashboard |