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Form 4B represents the next evolution in stereolithography (SLA) 3D printing technology, built upon years of groundbreaking hardware, software, and materials science innovations.
Form 4B is faster than ever, with the ability to print a model every minute — without compromising on accuracy. Print jobs are completed up to four times faster than with any other Form Series printer, regardless of whether you’re printing one part or a full build platform.
Whether they’re restorative models with removable dies and implant analogs or final restorations that need to look life-like and adapt perfectly, surface accuracy is key. Speed should never come at the cost of accuracy and precision.
For the Form Series, accessibility also means reliability. Even for users printing all day, every day, the printer won’t let you down. The Form Series set a high standard for print success and repeatable, reliable, high-volume use, but Form 4B surpasses it.
4x faster and 30% more build volume. With unprecedented speed, Form 4B can deliver a model a minute, without ever compromising on dimensional accuracy or surface finish.
Highly collimated light and 50 µm pixel size with pre-tuned anti-aliasing for subpixel resolution
Lower peel forces, light touch supports, and 50 µm pixel size with pre-tuned anti-aliasing
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.
Meet the experts and solve your most challenging jobs. Experience a live one-on-one demo tailored for you with our Application Engineers.
Masked Stereolithography (MSLA)
Low Force Display™ (LFD)
Backlight Unit
Light Processing Unit 4 (LPU 4)
Release Texture
Flexible Film Resin Tank
Intelligent Control Systems
High-Speed Automatic Resin Handling
Backlight Unit: 60 uniform-wavelength LEDs, a plano-convex lens array, and integrated air cooling
405 nm optical wavelength
16 mW/cm² optical power intensity delivered to the cure plane
50 µm pixel size
100 mm/hour
3.9 in/hour
Average: 40 mm/hour (1.6 in/hour) across all materials
Range: 15-100 mm/hour (0.6-3.9 in/hour) depending on the material
1-30 mm features: ±0.15% (lower limit: ±0.02 mm)
31-80 mm features: ±0.2% (lower limit: ±0.06 mm)
81-150 mm features: ±0.3% (lower limit: ±0.15 mm)
On average with Precision Model Resin:
- 99.7% of surfaces within 100 μm of CAD model
- 95% of surfaces within 50 μm of CAD model
- 69% of surfaces within 25 μm of CAD model
Yes
20.0 × 12.5 × 21.0 cm
7.9 × 4.9 × 8.3 in
5.25 liters
250 cm²
38.8 in²
27.3 cm
10.7 in
50 µm with pretuned anti-aliasing for subpixel resolution
Superior fine feature performance and sharp features compared to the Form 3B Series
25–300 µm
0.001–0.012 in
1
Next-generation resin cartridge
5-10x faster filling
63% less waste
30% less shelf space
High speed conduction resin heating with infrared temperature sensing
Auto-heats resin to 25–45 °C (77–113 °F), depending on material
Z-Axis Force Sensor: automatically optimizes print quality and print speed based on part geometry and selected material.
Auto-generated
Light-touch removal
39.8 × 36.7 × 55.4 cm
15.7 × 14.5 × 21.9 in
40.7 × 47.8 × 84.4 cm
16.0 × 18.8 × 33.2 in
18.3 kg
40.4 lb
18–28 °C
64–82 °F
100–240 VAC
4.8 A
50/60 Hz
480 W
Wi-Fi (2.4 and 5 GHz; IEEE 802.11 b/g/n/ac, WPA/WPA2)
Ethernet (1000 Mbit)
USB-C 2.0
7" interactive touchscreen
1280 × 800 resolution
Languages: English, German, French, Spanish, Italian, Japanese, Traditional Chinese, Simplified Chinese
Touchscreen alerts
SMS/email via Dashboard
Speaker for audio alerts
6 upgraded sensors that precisely control resin temperature, resin level, print forces, and print status:
- High-speed conduction resin heating with infrared temperature sensing
- Ultrasonic Resin Level Sense: controls resin in the tank
- Z-Axis Force Sensor: controls and minimizes print forces
- Resin Cartridge Load Cell: measures exact resin level in cartridge
- Printer Leveling Sensor
- Camera
Integrated camera
2592 x 1944 resolution (5MP)
Remote monitoring, print history, and print timelapses
Can be easily disabled, covered, or removed
PreForm, Dashboard, Fleet Control
Windows 7 (64-bit) and up
Mac OS X 10.12 and up
OpenGL 2.1
C++ runtime library from Microsoft
4 GB RAM (8 GB recommended)
STL, OBJ, and 3MF file input
FORM file output
One-Click Print
Adaptive layer thickness for faster printing with fine details
Remote Print
Auto-orient for optimal print position
Auto-mesh repair
Auto-generation of supports
Advanced tools for manually editing supports
Rotate, scale, duplicate, and mirror
Layer slicer for path inspection
Custom print settings
Available in multiple languages
Manage prints and printers via the cloud
Track resin and tank usage over time
SMS and email alerts
Create enterprise group accounts with admins to more easily share printers and control access
75,000+ layers with any Formlabs material *
For example: approximately 340 prints using clear aligner models (22 mm tall), any resin, and 100µm layer height
Light Processing Unit Estimated Lifetime
600k - 1.9M layers, depending on material and layer height *
For example: approximately 5,000 prints using diagnostic models (22 mm tall), Grey Resin v5, and 100µm layer height
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