A new era of medical and dental manufacturing

Form 4BL is a blazing fast, large-format medical 3D printer that offers the most diverse materials library for healthcare. Built on the same Low Force Display™ (LFD) print engine as Form 4L, it delivers 4.6× the build volume of Form 4B — 24.2 liters — with same-day turnaround for large or high-volume parts. Create biocompatible, sterilizable anatomical models, surgical instruments, and medical and dental devices fast, with easy workflows, leading reliability, versatile materials, and stunning part quality. Whether you run a hospital point-of-care lab, a medical device company, or a high-volume dental lab, Form 4BL lets you solve big problems with large-scale parts or produce many parts in one print job.

Why choose Form 4BL?

• Big parts — a 35.3 × 19.6 × 35.0 cm (13.9 × 7.7 × 13.8 in) build volume, 4.6× larger than Form 4B, for full-size anatomical models, large surgical instruments, and multi-part batches. Innovate at scale without limitations.
• Blazing speed — same-day turnaround for large or high-volume parts with a maximum print speed of 80 mm/hour; a spinal model that took 20 hours on other technologies printed in about an hour and a half.
• Stunning parts — ±0.15% XY dimensional tolerances, 46 µm pixel size, and pre-tuned anti-aliasing produce parts that always fit, rivaling injection molding.
• Versatile — 32 industry-leading Formlabs materials, including 12 biocompatible resins such as the BioMed family, plus third-party 405 nm materials via Open Material Mode.
• Reliable — validated print settings, intelligent control systems, re-engineered consumables, factory calibration, and remote monitoring deliver dependable production with stunningly accurate results.
• Intuitive — anyone can learn the full print workflow in about 15 minutes with PreForm's one-click print setup and no-hassle cartridges and tanks.

What's included

The Formlabs Form 4BL Complete Package includes the following items:

• (1) Form 4BL Printer
• (1) Form 4L Resin Tank
• (1) Form 4L Mixer
• (1) Form 4L Flex Build Platform
• (1) Resin Pump (Form 4)
• (1) Form 4L Finish Kit: Cleaning Tools
• (1) Form Wash L V2
• (1) Form Cure L V2 120V
• (1) Form 4BL Dental and Medical Service Plan 3 Years

Solve big problems with large-scale medical parts

With a 24.2 liter build volume and 692 cm² (107 in²) build area, Form 4BL prints anatomy and devices that simply don't fit on a desktop medical printer — a full scoliotic thorax, a complete skull, spinal sizing trials, or a ventilator assembly. And because LFD technology cures an entire layer at once, you can fill the platform with a batch of surgical guides, dental models, or single-use instruments in a single job to accelerate product development or keep production running.

• Build volume — 353 × 196 × 350 mm (13.9 × 7.7 × 13.8 in), 24.2 L, compared with 200 × 125 × 210 mm (7.9 × 4.9 × 8.3 in), 5.2 L on Form 4B.
• One part or many — print a single large-scale anatomical model or device, or batch many parts in one job for high-volume medical and dental production.
• Two resin cartridges — dual next-generation cartridges keep large jobs supplied with automatic resin handling.

Speed that scales: same-day turnaround for large prints

Form 4BL's Backlight Unit generates a uniform area projection of ultra-high-power light using 145 LEDs and collimating lenses, curing resin quickly and precisely anywhere on the build platform. Combined with the Light Processing Unit 4L, a low-force release texture, a flexible-film resin tank, and automatic resin handling, it delivers blazing fast print speeds with excellent print quality and accuracy. In Formlabs' benchmark tests on real medical parts, Form 4BL finished jobs several times faster than Form 3BL, a benchmark SLA printer, and a leading FDM printer:

• Arbutus Medical QuikBow® arms — 9 h 56 min on Form 4BL vs. 27 h 6 min on a leading FDM printer, 16 h 4 min on a benchmark SLA printer, and 50 h 18 min on Form 3BL.
• restor3d spinal sizing trials — 7 h 46 min on Form 4BL vs. 43 h 20 min on a leading FDM printer, 10 h 35 min on a benchmark SLA printer, and 68 h 15 min on Form 3BL.
• Axial3D scoliotic thorax — 11 h 57 min on Form 4BL vs. 92 h 17 min on Form 3BL; the leading FDM (27 h 25 min) and benchmark SLA (13 h 5 min) printers had to scale the model to 80% to fit.
• Skull — 8 h 18 min on Form 4BL vs. 47 h 16 min on Form 3BL; the leading FDM (17 h 28 min) and benchmark SLA (11 h 8 min) printers ran a reduced number of parts per build.
• Ventilator — 2 h 39 min on Form 4BL vs. 13 h 10 min on a leading FDM printer, 18 h 6 min on a benchmark SLA printer, and 21 h 36 min on Form 3BL.

As Brian Albers, 3D Printing Engineer at St. Louis Children's Hospital, explains: “With our other 3D printing technologies, producing an anatomical model of a spine would take 20 hours, making it impossible to complete in time for procedure planning. Using Fast Model Resin on Form 4BL, we printed it in just an hour and a half and delivered it the same day. Without that speed, we wouldn't have been able to respond to the case in time.”

Stunning parts that always fit

Form 4BL delivers the sharpest details, smoothest surfaces, and most accurate assemblies of any Formlabs large-format printer — from patient-specific anatomical models and sizing trials to sterile-ready single-use instruments like Arbutus Medical's QuikBow®, a tension bow for skeletal traction in the operating room that lets trauma centers use a smaller wire without a Kirschner bow.

• Sharpest details — highly collimated light and 46 µm pixel size with pre-tuned anti-aliasing for sub-pixel resolution.
• Smoothest surfaces — lower peel forces and Light Touch Supports leave minimal marks and a clean surface finish.
• Most accurate assemblies — ±0.15% XY dimensional tolerances so assemblies always fit.
• Dental-grade surface accuracy — on restorative models printed in Precision Model Resin, 99.9% of surfaces fall within 100 µm of the CAD model and 96.7% within 50 µm.

Tackle any problem with biocompatible, industry-leading materials

Form 4BL supports 32 Formlabs materials, including 12 biocompatible resins, with more new materials in development. The BioMed family — BioMed Clear, BioMed Durable, BioMed Flex 80A, BioMed Elastic 50A, BioMed White, BioMed Black, and BioMed Amber — gives medical and dental teams rigid, durable, flexible, and elastic options for anatomical models, surgical tools, and patient-contacting devices. Open Material Mode (included in the Form 4BL Complete and Premium Packages) unlocks third-party 405 nm photopolymer resins so you have the freedom to print your preferred materials. Formlabs optimization engineers put hundreds of printed parts to the test to ensure each material performs to the most reliable standards, right out of the box.

• BioMed Clear — clear, rigid, biocompatible, sterilizable, and transparent for fluid-path devices and see-through anatomy.
• BioMed Durable, White, Black & Amber — biocompatible rigid resins for instruments, guides, and end-use device components.
• BioMed Flex 80A & BioMed Elastic 50A — biocompatible flexible and elastic resins for soft-tissue models and compliant devices.
• Fast Model & general purpose resins — rapid, affordable materials for anatomical models, procedure-planning models, and dental models.
• Open Material Mode — print third-party 405 nm resins for even more flexibility.

Reliability at scale. Large-format medical 3D printing you can depend on.

In healthcare, a failed print can mean a missed procedure or a delayed patient. Form 4BL is engineered for dependable production: six upgraded sensors precisely control resin temperature, resin level, print forces, and print status, and every printer is factory calibrated so you get consistent results from the first print. As Todd Goldstein of Northwell Health puts it: “Since we're producing surgical-grade equipment, the biocompatibility of the resins is crucial. The ability for prints to start and finish correctly, along with the duration of the prints, can impact patient care if we're working against a deadline. With Form 4BL, we've achieved a 100% success rate on our parts.” Allison Sibley, Product Specialist at Adaptiiv, agrees: “Form 4BL is great. We've pushed it to its limits and not had any failed prints.”

• Validated print settings — every Formlabs material ships with tuned, tested print settings.
• Intelligent control systems — high-speed conduction resin heating with infrared temperature sensing, ultrasonic resin level sensing, a Z-axis force sensor, resin cartridge load cells, and a printer leveling sensor.
• Re-engineered consumables — the Form 4L Resin Tank is rated for 75,000+ layers with any Formlabs material (roughly 190 average-height prints), and next-generation cartridges fill 5–10× faster with 63% less waste.
• Factory calibration — each printer is calibrated before it ships for consistent, accurate results.
• Remote monitoring — an integrated 5 MP camera provides live views, timelapses, and print history through Dashboard, and can be easily disabled, covered, or removed.

Solutions for every stage, from prototyping to commercial product

Form 4BL supports the full medical device lifecycle — concept exploration, looks-like and functional prototyping, clinical and usability trials, single-use instruments, and end-use devices — all with same-day turnaround. Formlabs 3D printers helped PSYONIC create the Ability Hand, an FDA-registered, Medicare-covered upper-limb prosthesis, from scratch: in-house printing enabled rapid iteration and versatile testing with specialized resins, eliminating costly outsourcing and bringing the product to market faster and at lower cost. For dental labs and clinics, the same large platform and biocompatible library scale up production of models, guides, and appliances.

So intuitive that anyone can learn to print in 15 minutes

Form 4BL uses the same free PreForm print preparation software and cloud-based Dashboard as the rest of the Form 4 Series, so the workflow is simple enough for a new user to learn in four steps.

1. Import your model and prepare your print — smart auto-orientation, advanced support generation, and live printability checks in free PreForm software.
2. Load a material and click print — validated print settings, no-hassle cartridges and tanks, and automatic resin dispensing.
3. Remove, wash, cure — quick-release part removal, automated part cleaning with Form Wash L, and precision post-curing with Form Cure L for peak material properties.
4. Finish your part — light-touch supports for quick, clean support removal, then optional sanding, coating, or painting.

The Form 4BL ecosystem: complete your 3D printing experience

Form 4BL works seamlessly with Form Wash L V2 and Form Cure L V2 to automate post-processing for large-format biocompatible and medical prints. Form Wash L automates cleaning to remove uncured resin from big parts and full platforms, and Form Cure L delivers reliable, professional post-curing so parts reach their final mechanical properties — ensuring consistent results and supporting regulatory compliance with minimal hands-on labor.

Choose the Form 4BL package that fits your workflow:

• Formlabs Form 4BL Basic Package — everything you need to start printing: printer, resin tank, build platform, and finishing essentials. Ideal if you already own post-processing equipment, with optional 1-, 3-, or 5-year Form 4BL Dental and Medical Service Plans.
• Formlabs Form 4BL Complete Package (this product) — adds Form Wash L V2 and Form Cure L V2 for a fully automated print-wash-cure workflow, plus a 3-year Form 4BL Dental and Medical Service Plan.
• Formlabs Form 4BL Premium Package — built for higher throughput: two Form Wash L V2 units, extra build platforms, Finishing Tools, Open Material Mode, and a 5-year Form 4BL Dental and Medical Service Plan.

Form 4BL Dental and Medical Service Plans

The Formlabs Form 4BL Complete Package includes a 3-year Form 4BL Dental and Medical Service Plan, extending coverage beyond the standard warranty with priority support and hardware protection for three years.

Specifications

Specifications subject to change. Form Cure L V2 included in the Complete and Premium Packages is the 120V model.