Form 3L - Large SLA 3D printer



Form 3L

Small Details, Big Results

The Form 3L is an affordable large format 3D printer trusted by professionals for fast turnaround of industrial-quality parts.

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Print Large Parts, Fast

Form 3L offers five times the build volume and two times the laser power of the Form 3.

11.8 in13.2 in7.9 in
30 cm33.5 cm20 cm
Form 3L - Large build volume - 3D printing

Perfectionism That Scales

With advanced Low Force Stereolithography (LFS)™ technology, Formlabs has completely re-engineered resin-based 3D printing to drastically reduce the forces of the print process. 



XY Resolution


Laser Power

25 – 300μm

Layer Thickness


40,000,000 Parts Printed With Formlabs Technology


Low Force Stereolithography (LFS)™ uses a flexible tank and linear illumination to deliver groundbreaking print quality and printer reliability.


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Pinpoint Precision




laser icon


Twice the Laser Power

Two staggered Light Processing Units (LPUs) inside the printer use a compact system of lenses and mirrors to deliver accurate, repeatable prints.



XY Resolution


Laser Power




Form 3L Light Processing Units (LPUs)

Optimized laser path:
Two LPUs work simultaneously along an optimized path to efficiently print parts of all sizes.

Crisp, clean features:
Each high-density laser passes through a spatial filter to guarantee a clean laser spot.

Consistent precision:
A parabolic mirror ensures that the laser prints perpendicular to the build plane, ensuring uniform print quality across the entire build platform.

Nonstop Printing




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Nonstop Printing

Integrated sensors help maintain ideal print conditions and send you alerts about the state of your machine. 

High material capacity:
The Form 3L can hold two easy-to-switch resin cartridges, preventing interruptions during large print jobs.

Closed-loop calibration:
Optical sensors continuously correct for scale and power, and can even detect dust.

User-replaceable components:
The Light Processing Units, rollers, and optics window can be replaced in-house, reducing the need for replacement printer shipments.

Introduction to stereolithography (SLA) 3D printing


Introduction to SLA

Learn how stereolithography 3D printing can benefit your work.

Download the White Paper

3D printing - Design model in CAD software and import an STL or OBJ file into PreForm print preparation software

Design your model in standard CAD software and import an STL or OBJ file into our PreForm print preparation software.

3D printing - Print the large part

Send prints over WiFi, reprint previous jobs, and manage your print queue with ease with the printer’s intuitive touchscreen interface.

3D printing - Post Process - Tear away light-touch supports

Easily tear away light-touch supports after printing and put the finishing touches on your parts with the Form 3L Finish Kit.


One Platform, 20+ Materials

Switch seamlessly between a library of general purpose and specialty resins with a cross-compatible cartridge system.

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Built for Teams

Plan and manage your print queue in PreForm and manage printers and teams through your online Dashboard.

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Support When You Need It

Get helpful, human service when you need it from a Formlabs expert, with plans that scale with your business.

Explore Plans



Start scaling your prototyping and production today.

Pre-order the Form 3L
Explore the Form 3