Quality - Tradition - Innovation Everything for Jewellers & Watchmakers

Big Parts, Blazing Fast

Form 4L is a blazing-fast large-format masked SLA 3D printer that combines an industry-leading materials library with a reliable, accurate print engine. Turn your biggest ideas into reality faster than ever with easy workflows, leading reliability, and stunning part quality using the Form 4L ecosystem.

Form 4L’s speed is driven by Formlabs’ new Low Force Display™ Print Engine, a powerful combination of ultra-high power LEDs, collimating lenses, optical filters, and a robust liquid crystal display. Together they cure each layer of resin rapidly — regardless of part size or quantity. With tight tolerances, parts printed in every resin on Form 4L will match your design parameters, every time.

• BIG PARTS: Solve big problems with big parts.
• BLAZING FAST: Large prints in under 6 hours
• RELIABLE: Large format 3D printing that you can depend on
• VERSATILE: Industry-leading materials 
• STUNNING PARTS: Stunning parts that always fit
• INTUITIVE: Anyone can learn in 15 minutes

Request a free printed sample to know the quality of printing and find the best resin for your needs: 

Resin Library for Jewellery

Resin Library for Design & Engineering

Tech Specs:

1-year warranty included

Technology: Masked Stereolithography (MSLA)

Printer Engine:  Low Force Display™ (LFD)

Key Components of the Print Engine:

• Backlight Unit
• Light Processing Unit 4L (LPU 4L)
• Release Texture
• Flexible Film Resin Tank
• Intelligent Control Systems
• Automatic Resin Handling

Light Source:

• Backlight Unit: 145 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
• 46 µm pixel size

Maximum Print Speed:

• 80 mm/hr
• 3.1 in/hour

Typical Print Speed:

• Average: 24 mm/hour across all materials
• Range: 20-35 mm/hour depending on material

Typical Dimensional Tolerances:

• 1-30 mm features: ±0.15% (lower limit: ±0.02 mm)
• 31-80 mm features: ±0.3% (lower limit: ±0.06 mm)
• 81-150 mm features: ±0.3% (lower limit: ±0.15 mm)

Surface Accuracy (Restorative Models):

• On average with Precision Model Resin:
• 99.9% of surfaces within 100 μm of CAD model
• 96.7% of surfaces within 50 μm of CAD model
• 71.4% of surfaces within 25 μm of CAD model

Biocompatible Materials: No (available on Form 4BL)

Build Volume (W x D x H):

• 35.3 × 19.6 × 35.0 cm
• 24.2 liters

Build Area: 692 cm²

XY Resolution:

• 46 µm with pre-tuned anti-aliasing for subpixel resolution
• Superior fine feature performance and sharp features compared to the Form 3L Series

Layer Thickness: 25–200 µm

Resin Cartridges: 2

Resin Cartridge Type:

• Next-generation resin cartridge
• 5-10x faster filling
• 63% less waste
• 30% less shelf space

Supports:

• Auto-generated
• Light-touch removal 

Printer Dimensions (W x D x H):  66.4 x 52.8 x 79.4 cm

Minimum Access Dimensions (W x D x H): 88.9 x 116.9 x 81.3 cm

Printer Weight: 58.5 kg

Operating Environment: 18–28 °C

Power Requirements:

• 100-240 VAC
• 9 A
• 50/60 Hz
• 900 W 

Connectivity:

• Wi-Fi (2.4 and 5 GHz; IEEE 802.11 b/g/n/ac, WPA/WPA2)
• Ethernet (1000 Mbit)
• USB-C 2.0

Printer Control:

• 7" interactive touchscreen
• 1280 × 800 resolution
• Languages: English, German, French, Spanish, Italian, Japanese, Simplified Chinese

Alerts:

• Touchscreen alerts
• SMS/email via Dashboard
• Speaker for audio alerts

Sensors and Control Systems:

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 

Camera:

• Integrated camera
• 2592 x 1944 resolution (5MP)
• Remote monitoring, print history, and print timelapses
• Can be easily disabled, covered, or removed

Software: PreForm, Dashboard, Fleet Control

PreForm System Requirements:

• Windows 7 (64-bit only, ARM not supported) and up
• Mac OS X 10.15 and up
• OpenGL 2.1
• 4 GB RAM (8 GB recommended)

PreForm File Types:

• STL, OBJ, and 3MF file input
• FORM file output 

Dashboard Printer Management Features:

• 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 

Resin Tank Estimated Lifetime:

75,000+ layers with any Formlabs material

Light Processing Unit Estimated Lifetime:

600k - 1.9M layers, depending on material and layer height

What’s Included

• 381401 Form 4L 3D-Printer

• 382401 Form 4L Resin Tank

• 382402 Form 4L Mixer

• 382413 Form 4L Build Platform

• 382136 Resin Pumping System (Form 4)

• 382424 Finish Kit Cleaning Tools Form 4L
• 381223 Form Wash L (2nd Gen)
• 381222 Form Cure L
• 30S-PSP-12M Formlabs Pro Service Plan (PSP) - 12M

No accessories