Formlabs Form 3L

The Formlabs Form 3L 3D printer is designed for big results with small details. With a large print build capacity of 335mm x 200mm x 300mm, the Form 3L uses the Low Force Stereolithography (LFS) printing process to produce large industrial-quality parts, quickly. 

LFS is an advanced form of stereolithography (SLA) 3D printing technology that uses linear illumination and a flexible tank to turn liquid resin into flawless prints.

The build volume of the Form 3L is 5 times larger than the Form 3 and combined with two custom-designed Light Processing Units (LPUs), two lasers simultaneously build large, dense parts quickly, making the Form 3L ideal for large prototypes, models, props, moulds and manufacturing aids.

The Form 3L is compatible with the range of Formlabs 1 litre resin cartridges*, using two cartridges of the same resin at a time. 

Key features of the Form 3L:

  • Large format build size of 335mm x 200mm x 300mm using advanced Low Force Stereolithography (LFS) 3D printing process
  • Detailed, large parts, fast with 2x engineered Light Processing Units (LPU)
  • Light-touch supports, that are easy to tear away

The Form 3L has excellent connectivity via Ethernet, Wi-Fi and USB and is compatible with Windows, Mac and Linux operating systems. The print software, PreForm allows for management of the Form 3L within teams to monitor and manage print flow.

Formlabs Form 3L Technical Specifications

Print Technology

Low Force Stereolithography (LFS)

Resin Fill SystemAutomated
Material(s)Formlabs Resins 1 litre cartridges
Resin Cartridges2 (of the same resin)

Form 3L Dimensions


Minimum Access Dimensions

775mm (w) x 520mm (d) x 735mm (h)

30.5” (w) x 20.5” (d) x 28.9″ (h)

1050mm (w) x 9000mm (d) x 1050mm (h)

41.3” (w) x 354.3” (d) x 41.3″ (h)

Max Build Size

335mm (w) x 200mm (d) x 300mm (h)

13.2” (w) x 7.9” (l) x 11.8” (h)
Layer Thickness (axis resolution)

25 – 300 microns

Laser Spot Size (FWHM)

85 microns


Laser Power

Two 250 mW lasers



Light-touch removal

Operating Temperature

Auto-heats to 35°C

Temperature controlAir-heated print chamber
Design file input formatSTL / OBJ
Power requirements100 – 240V, 7.5A, 50/60 Hz, 650 W
Laser specifications

2 Light Processing Units

EN 60825-1:2007 certified

Class 1 Laser Product

405 nm wavelength

250 mW power

85 micron (0.0033 in) laser spot

System requirements

Windows 7 (64-bit) onwards

Mac OS X 10.10 onwards

OpenGL 2.1



Wi-Fi (2.4, 5 GHz)

Ethernet (1000 Mbit)

USB 2.0

Printer control

5.5″ Interactive touch-screen

1280 x 720 resolution


Touchscreen alerts

SMS/email via Dashboard

Two LED status indicators

Speaker for audio alerts

PreForm Print Setup Features

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

Rotate, scale, duplicate and mirror

Layer slicer for path inspection

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 & control access

      Please note the Technical Specifications are provided by the Manufacturer and may be subject to change.

Scroll to Top