Which 3D Printing Technology Is the Right for You?

Compare Formlabs SLA and SLS 3D printers
SLA
SLA

Stereolithography (SLA)

FORM SERIESRESIN PRINTING
SLA 3D printers use a laser to cure liquid resin into hardened plastic in a process called photopolymerization.
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Overview
TECHNOLOGY
Low Force Stereolithography (LFS)™
LFS is the next generation of SLA 3D printing, that quickly delivers incredible surface quality and print accuracy, meeting the demands of today’s market for scalable, reliable, industrial-quality 3D printing.
Learn More About SLA 3D Printing
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BENEFITS
  • High resolution and fine details
  • Great accuracy and print quality
  • Wide range of materials
  • Easy to use
  • Quick prints
APPLICATIONS
  • Rapid prototyping
  • Functional prototyping
  • Concept modeling
  • Rapid tooling
  • Manufacturing aids
  • Short-run production
  • Dental models and appliances
  • Medical models and medical devices
  • Jewelry prototyping and casting
  • Models and props
Material
SURFACE FINISH
Smooth, minimal layer lines
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MATERIAL LIBRARY
30+ functional resins, more in development
A wide range of materials for prototyping and production from soft silicone-like to flexible, tough, durable, and rigid varieties. Specialty materials for high-temperature applications and castable patterns. A wide variety of resins for dental and medical applications, including materials for biocompatible parts.
Explore SLA Materials
Build Volume
FORM 3L AND FORM 3BL
33.5 x 20 x 30 cm
13.2 x 7.9 x 11.8 in
FORM 3+ AND FORM 3B+
14.5 × 14.5 × 18.5 cm
5.7 × 5.7 × 7.3 in
THROUGHPUT
Medium/High
The Form 3L and Form 3BL provide the flexibility to print large-scale parts as well as batches of small parts with minimal printer interaction, while the Form 3+ and Form 3B+ offer streamlined and fast means of producing functional, high-quality prototypes and end-use parts. Switch between a wide range of functional materials in seconds with our swappable, cross-compatible resin cartridge system.
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The Form 3L and From 3BL offers five times the build volume of the Form 3+ and Form 3B+.
Setup & Ease of Use
Plug and print
Easy workflow empowers anyone at your company to use the system independently after minimal training. Formlabs offers contact-free delivery and online or in-person advanced training for the entire team to make onboarding even easier.
Maintenance
Minimal
Formlabs SLA systems require minimal maintenance. In the rare case something does go wrong, the Light Processing Unit, rollers, and optical window are replaceable in-house to prevent the need for replacement printer shipments and maximize your uptime. Improved failure detection and handling means you can experiment with confidence.
Post-Processing
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Form Wash and Form Cure, Form Wash L and Form Cure L
Our automated washing and curing solutions streamline the SLA post-processing workflow to consistently deliver high-quality results with less time and effort. 
Explore Form Wash and Form CureExplore Form Wash L and Form Cure L
SUPPORTS
Light-touch supports
Our "light-touch supports" break off with ease, leaving behind minimal support marks that can be easily removed with light sanding.
CLEANING
Wash parts in a solvent
Cleaning printed parts in a wash solvent removes any uncured resin from the part, leaving you with a smooth surface finish. Automate washing with the Form Wash and Form Wash L.
FINISHING
Post-curing (optional)
When an SLA part finishes printing, it remains on the build platform in a “green state.” Through exposure to a combination of light and heat, post-curing unlocks this last mile of material properties. Post-curing is required for certain materials and for biocompatible parts. Automate curing with the Form Cure and Form Cure L.
Learn More About Post-Curing
Space
ENVIRONMENT
Office and workshop
Formlabs SLA printers are suitable for various environments, including the office, lab, workshop and the manufacturing floor. Our most compact SLA printers, the Form 3+ and Form 3B+, can fit on a desktop.
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SLS
SLS

Selective Laser Sintering (SLS)

FUSE SERIESPOWDER PRINTING
SLS 3D printers use a high-power laser to sinter small particles of polymer powder into a solid structure.
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Overview
TECHNOLOGY
Selective Laser Sintering (SLS)
The Fuse Series are the first benchtop industrial SLS 3D printers that offer high quality end-use parts in a compact footprint. The complete, simplified workflow delivers high throughput at a fraction of the cost of traditional industrial SLS systems.
Learn More About SLS 3D Printing
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BENEFITS
  • Excellent mechanical properties
  • Great accuracy and print quality
  • No need for support structures
  • Cost-efficient for large production runs
  • Production-ready
APPLICATIONS
  • End-use parts
  • Short-run, bridge, or custom manufacturing
  • Functional prototyping
  • Long-lasting, durable manufacturing aids
  • Medical devices, prosthetics, and orthotics
Material
SURFACE FINISH
Slightly grainy finish
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MATERIAL LIBRARY
4 varieties of nylon, more materials coming soon
The Fuse 1 currently prints with Nylon 12 Powder, Nylon 12 GF Powder, and Nylon 11 Powder, while the Fuse 1+ 30W enables all the above-mentioned powders, as well as Nylon 11 CF Powder. All SLS Powders are ideal for 3D printing long-lasting, durable, end-use parts and functional prototypes.
Explore SLS Materials
Maximum Part Size
FUSE 1+ 30W and FUSE 1
16.5cm x 16.5cm x 30cm
6.3 x 6.3 x 11.6 in
THROUGHPUT
High
The Fuse 1 generation printers are designed for nonstop throughput. They come with a removable build chamber, allowing you to start new prints right after the previous print has finished to minimize downtime. Cooldown time takes only about half the print time for large builds, an industry-leading value that allows you to get to finished parts quickly.
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The Fuse 1 generation printers allow you to pack parts tightly to optimize each build for the highest productivity.
Setup & Ease of Use
SLS made manageable
From print setup to powder recovery, our hardware and software are designed to maximize your efficiency, with an intuitive interface to walk you through all steps of printing and maintenance. Anyone at your company can use the system independently after a quick online or in-person training.
Maintenance
Efficient
The Fuse Series ecosystem is designed for minimal upkeep,  offering proactive maintenance alerts and a full-color touchscreen interface that guides you through every step of printing and maintenance.
Post-processing
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Fuse Sift
The Fuse Sift is a safe, efficient powder recovery system for the Fuse Series. This all-in-one station combines part extraction, powder recovery, storage, and mixing in a single free-standing device. 
Explore Fuse Sift
SUPPORTS
No supports needed
SLS parts are supported by powder as they print, so no supports are needed, reducing post-processing labor.
CLEANING
Clean excess powder
Extract and clean your parts from the build chamber and recover unused powder to be recycled in future prints. Use Fuse Sift as an all-in-one station.
FINISHING
Media blasting (optional)
Formlabs recommends the use of a media blasting cabinet, which uses compressed air and an abrasive media like silicon carbide to eliminate graininess and improve surface finish on SLS parts. 
Learn More About Finishing SLS Parts
Space
ENVIRONMENT
Workshop
The Fuse 1 generation printers are best suited for a workshop or machine shop setting, though it can be used in an office environment if you have a large open space with consistent housekeeping practices.
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Compare Formlabs 3D Printer Tech Specs

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Technology
Low Force Stereolithography (LFS)™
Material Type
Resin
Biocompatible Materials
No (available on Form 3B)
Maximum Part Size

14.5 × 14.5 × 18.5 cm
5.7 × 5.7 × 7.3 in

Layer Thickness

25 – 300 microns
.001 – .012 in

Laser Power
One 250 mW laser
Supports

Auto-generated
Light-touch removal

Materials
30+ Functional Resins: A wide range of materials for prototyping and producing fully functional parts, whether flexible, tough, durable, or rigid.
Printing Environment
Ambient conditions. Only PU Resins require a dry cabinet for humidity control.
Printer Dimensions (W × D × H)

40.5 × 37.5 × 53 cm
15.9 × 14.8 × 20.9 in

Software

PreForm print preparation software
Dashboard printer management

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Technology
Low Force Stereolithography (LFS)™
Material Type
Resin
Biocompatible Materials
No (available on Form 3BL)
Maximum Part Size

33.5 × 20 × 30 cm
13.2 × 7.9 × 11.8 in

Layer Thickness

25 – 300 microns
.001 – .012 in

Laser Power
Two 250 mW lasers
Supports

Auto-generated
Light-touch removal

Materials
30+ Functional Resins: A wide range of materials for prototyping and producing fully functional parts, whether flexible, tough, durable, or rigid.
Printing Environment
Ambient conditions. Only PU Resins require a dry cabinet for humidity control.
Printer Dimensions (W × D × H)

77 × 52 × 74 cm
30.3 × 20.5 × 29.1 in

Software

PreForm print preparation software
Dashboard printer management

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Technology
Selective Laser Sintering (SLS)
Material Type
Powder
Biocompatible Materials
Yes
Maximum Part Size

15.9 × 15.9 × 29.5 cm (Nylon 12 Powder)
6.3 × 6.3 × 11.6 in (Nylon 12 Powder)

Layer Thickness

110 microns
0.004 in

Laser Power
One 30W Ytterbium fiber laser
Supports
No supports required
Materials
4 High-Performance Industrial Grade Materials: Nylon 12 Powder, Nylon 12 GF Powder, Nylon 11 Powder, Nylon 11 CF Powder
Printing Environment
Air environment, with the option to print in a nitrogen atmosphere for enhanced material properties and lower refresh rates.
Printer Dimensions (W × D × H)

64.5 × 68.5 × 107 cm (165.5 cm with stand)
25.4 × 27 × 42 in (65.0 in with stand)

Software

PreForm print preparation software
Dashboard printer management