/SLA Stereolithography Resin Printers
Get In TouchThe Formlabs SLA series adopts Low Force Display™ (LFD) low‑stress display technology, equipped with 60 uniform‑wavelength LEDs and a collimating lens array for ultra‑fast curing and exceptional precision. Below are four complete‑range models covering standard desktop to large‑format medical‑grade applications.
Form 4
Powered by the Low Force Display™ (LFD) print engine, the Form 4 completes most print jobs within 2 hours. It delivers injection‑molding‑comparable surface finish and assembly accuracy, with an independently verified print success rate of up to 98.7%.
- Most parts finished within 2 hours
- 23 industrial‑grade resins plus open‑material mode
- ±0.15 % XY dimensional tolerance, comparable to injection‑molded parts
- 50 μm pixel size with sub‑pixel anti‑aliasing
- 7‑inch touchscreen, ready for operation within 15 minutes
Form 4B
Designed specifically for medical workflows. It runs 4 × faster than the Form 3B+ with a 30 % larger build volume. It supports 38 materials including 15 biocompatible resins for anatomical models, surgical guides, dentures and other medical‑related applications.
- 4 × print speed improvement vs Form 3B+
- 38 available materials including 15 biocompatible resins
- Specialized medical resins: BioMed Clear / Durable / Flex / Elastic
- 98.7 % print‑success‑rate (independent third‑party test)
- Complete medical ecosystem with MSP service program
Form 4L
The large‑format SLA printer from Formlabs, offering a build volume 4.6 × larger than the Form 4 (24.2 L). Large‑size parts can be completed within 6 hours. Equipped with 145‑LED backlight unit, ideal for large prototypes and batch production runs.
- 24.2 L build volume, 4.6 × larger than Form 4
- Large‑size prints completed within 6 hours
- 30 industrial‑grade resins plus open‑material mode
- 145‑LED backlight unit, 46 μm pixel size
- Dual‑cartridge resin system for automated high‑speed resin handling
Form 4BL
Large‑format SLA printer engineered for medical use, with a build volume 4.6 × larger than the Form 4B. It supports biocompatible resins and open‑material mode, well‑suited for batch production of large dental models, spinal anatomical models and anatomical phantoms.
- 24.2 L build volume, 4.6 × larger than Form 4B
- Large‑format medical parts delivered same‑day
- Supports BioMed Clear / Durable / Flex / Elastic medical resins
- 145‑LED backlight unit, 46 μm pixel size
- Works in conjunction with Form Wash L and Form Cure L post‑processing units
SLS Selective Laser Sintering Printers
Get In TouchThe Formlabs Fuse series are industry‑leading desktop‑size SLS printers, chosen by over half of global SLS users. Support‑free manufacturing produces functional nylon parts directly. Available materials include Nylon 12, Nylon 11, TPU 90A, as well as glass‑filled and carbon‑fiber‑reinforced powders.
Fuse 1+ 30W
Selected by more than half of global SLS users. Equipped with a 10 W ytterbium fiber laser, it builds functional nylon parts without support structures. It delivers high powder recyclability with part costs as low as $0.87, suitable for applications from prototyping to batch production.
- Chosen by over half of global SLS users
- 10 W ytterbium fiber laser, 200 μm spot size
- Support‑free direct production of functional parts
- 7 nylon / TPU powders plus open‑material mode
- Fuse Sift powder recovery system, 10‑min powder cleaning
- Part cost as low as $0.87 (with bulk powder discount)
Fuse X1
The new‑generation industrial‑grade SLS printer from Formlabs. It features a high‑power 120 W ytterbium fiber laser and a 330×330×565 mm build volume for large‑size functional components and batch manufacturing. Equipped with a 15.55‑inch touchscreen, thermal‑camera temperature control system and 13 independent heating zones.
- 120 W ytterbium fiber laser, 330 μm spot size
- 330×330×565 mm build volume for large‑format production
- Thermal‑camera temperature control + 13 independent heating zones
- 105 L large‑capacity powder hopper
- 15.55‑inch touch‑screen operation
- Compatible with Fuse Sift X1, modular build chamber
Post‑Processing Accessories
Get In TouchComplete Formlabs post‑processing equipment portfolio covering SLA washing & curing, as well as SLS powder removal and blast finishing. Achieve full‑part post‑processing in one workflow. Automated workflows reduce manual work and improve finished‑part consistency.
Form Wash
Automated washing unit for Form 4 / 4B. Place the build platform directly after printing. It performs automatic isopropyl‑alcohol washing, then lifts parts for air‑drying upon completion.
Form Cure
High‑speed post‑curing unit for Form 4 / 4B. Precise UV‑light and heating system brings materials to peak mechanical performance and drastically cuts curing cycle time.
Form Wash L
Large‑size automated washing unit for Form 4L / 4BL. Larger washing capacity to handle large‑format parts and multi‑part batch‑washing workflows.
Form Cure L
Professional large‑format post‑curing unit for Form 4L / 4BL. Reliable UV curing and temperature‑control system to achieve optimal material performance for large‑size printed parts.
Fuse Sift
SLS powder‑removal & recycling station for Fuse 1+ 30W. Finishes powder cleaning within 10 minutes. Automatically recycles unused powder and mixes with fresh powder for high powder‑utilization efficiency.
Fuse Blast
Automated blasting & polishing system for the Fuse series. Transforms rough SLS surfaces into smooth end‑part quality without extra manual finishing work.
SLA MSLA Series Specifications
Get In TouchDetailed specification comparison for the full Formlabs SLA‑MSLA lineup including Form 4, Form 4B, Form 4L and Form 4BL to support your equipment‑selection process.
| Parameters | Form 4 | Form 4B | Form 4L | Form 4BL |
|---|---|---|---|---|
| Technology Type | MSLA | MSLA | MSLA | MSLA |
| Print Engine | Low Force Display™ (LFD) | Low Force Display™ (LFD) | Low Force Display™ (LFD) | Low Force Display™ (LFD) |
| Target Application | General‑Purpose Desktop | Medical‑Grade | Large‑Format General‑Purpose | Large‑Format Medical‑Grade |
| Starting Price | $2,625 | — | — | — |
| LED Count | 60 | 60 | 145 | 145 |
| Wavelength | 405 nm | 405 nm | 405 nm | 405 nm |
| Optical Power Density | 16 mW/cm² | 16 mW/cm² | 16 mW/cm² | 16 mW/cm² |
| Pixel Size | 50 μm | 50 μm | 46 μm | 46 μm |
| Max Print Speed | 100 mm/h | 100 mm/h | 80 mm/h | 80 mm/h |
| Typical Print Speed | 40 mm/h average | 40 mm/h average | 24 mm/h average | 24 mm/h average |
| Build Volume (W×D×H) | 200×125×210 mm | 200×125×210 mm | 353×353×350 mm | 353×353×350 mm |
| Total Build Capacity | 5.25 L | 5.25 L | 24.2 L | 24.2 L |
| Layer Thickness Range | 25–200 μm | 25–200 μm | 25–200 μm | 25–200 μm |
| XY Dimensional Tolerance | ±0.15% (1–30 mm) | ±0.15% (1–30 mm) | ±0.15% (1–30 mm) | ±0.15% (1–30 mm) |
| Resin Cartridges | 1 | 1 | 2 | 2 |
| Available Materials | 23 | 38 (15 biocompatible) | 19 | Includes biocompatible resins |
| Open‑Material Mode | Supported | Supported | Supported | Supported |
| Print Success Rate | 98.7% | 98.7% | In‑testing | In‑testing |
| Machine Dimensions (W×D×H) | 39.8×36.7×55.4 cm | 39.8×36.7×55.4 cm | 66.4×52.8×79.4 cm | 66.4×52.8×79.4 cm |
| Unit Weight | 18.3 kg | 18.3 kg | 58.5 kg | 58.5 kg |
| Power Rating | 480 W | 480 W | 900 W | 900 W |
| Power Supply | 100‑240 VAC, 50/60 Hz | 100‑240 VAC, 50/60 Hz | 100‑240 VAC, 50/60 Hz | 100‑240 VAC, 50/60 Hz |
| Touchscreen | 7″ (1280×800) | 7″ (1280×800) | 7″ (1280×800) | 7″ (1280×800) |
| Camera | 5MP Integrated Camera | 5MP Integrated Camera | 5MP Integrated Camera | 5MP Integrated Camera |
| Connectivity | Wi‑Fi / Ethernet / USB‑C | Wi‑Fi / Ethernet / USB‑C | Wi‑Fi / Ethernet / USB‑C | Wi‑Fi / Ethernet / USB‑C |
| Resin Tank Lifetime | 75,000+ Layers | 75,000+ Layers | 75,000+ Layers | 75,000+ Layers |
SLS Selective Laser Sintering Series Specifications
Get In TouchDetailed specification comparison for Formlabs SLS Selective Laser Sintering lineup including Fuse 1+ 30W and Fuse X1 to assist your machine‑selection evaluation.
| Parameters | Fuse 1+ 30W | Fuse X1 |
|---|---|---|
| Technology Type | Selective Laser Sintering (SLS) | Selective Laser Sintering (SLS) |
| Target Application | Desktop Industrial Grade | Industrial‑Grade Large‑Format |
| Starting Price | $24,999 (Entry Bundle) | Contact Sales |
| Laser Type | Ytterbium Fiber Laser | Ytterbium Fiber Laser |
| Laser Power | 10W | 120W |
| Laser Wavelength | 1070 nm | 1064 nm |
| Laser Spot (FWHM) | 200 μm | 330 μm |
| Build Volume (W×D×H) | 165×165×300 mm | 330×330×565 mm |
| Layer Thickness | 110 μm | 110 μm |
| Powder Hopper Capacity | 17.8 L | 105 L |
| Supports | Support‑Free | Support‑Free |
| Machine Dimensions (W×D×H) | 64.5×68.5×107 cm | 157×83×193 cm |
| Unit Weight | 114 kg | 570 kg |
| Warm‑Up Time | < 60 min | < 90 min |
| Max Internal Temperature | 200 °C (392 °F) | 210 °C (410 °F) |
| Temperature Control System | Quartz Tube Heating + PTC Chip | Thermal Camera + 13 Independent Heating Zones |
| Air Filtration | 2‑Stage Filtration (HEPA + Activated Carbon) | 2‑Stage Filtration + External Inert‑Gas Connection |
| Power Requirements | US:120V/15A · EU:230V/7.5A | 208‑240VAC, 50A, 3.5kW |
| Touchscreen | 10.1″ (1280×800) | 15.55″ (1080×1920) |
| Connectivity | Wi‑Fi / Ethernet / USB 2.0 | Wi‑Fi / Ethernet / USB‑C |
| Laser Safety Class | Class 1 | Class 1 |
| Compatible Powder‑Handling Unit | Fuse Sift | Fuse Sift X1 |
| Build Chamber | Modular, compatible with Fuse 1 generation | Modular, compatible with Fuse X1 generation |
| Operating Environment | 18‑28 °C, RH <30% | 18‑28 °C, RH <30% |
Core‑Technologies
Get In TouchThe Formlabs Form 4 series features the proprietary Low Force Display™ (LFD) low‑stress display technology. It optimizes stereolithography printing across optics, release mechanics, sensing and resin‑handling to improve print accuracy and success rate.
Low Force Display™ (LFD) Low‑Stress Display Technology
| Backlight Unit | Form 4/4B: 60 uniform‑wavelength LEDs + collimating lens array + integrated air‑cooling Form 4L/4BL: 145 uniform‑wavelength LEDs + collimating lens array + integrated air‑cooling |
| Light Processing Unit (LPU 4) | Highly collimated beam; 50 μm pixel size (Form 4/4B) / 46 μm pixel size (Form 4L/4BL). Pre‑calibrated anti‑aliasing delivers sub‑pixel resolution. |
| Release Texture | Flexible‑film resin tank reduces peel‑off force and minimizes support contact area. |
| Intelligent Control System | Six upgraded sensors: IR resin temperature sensor, ultrasonic resin‑level sensor, Z‑axis force sensor, resin‑cartridge weight sensor, printer levelling sensor, integrated camera. |
| High‑Speed Automated Resin Handling | New‑generation resin cartridge: 5‑10 × faster filling speed, 63 % less material waste, 30 % smaller shelf‑space footprint. |
| Resin Heating | High‑speed conductive heating plus IR temperature sensing; auto‑heated to 25‑45 °C (material‑dependent). |