Formlabs Form 4L 3D Printer
The Formlabs Form 4L is a high-speed, large-format SLA 3D printer designed for industrial performance and unmatched reliability. With support for 23+ advanced materials and precision accuracy down to ±0.15%, it’s the perfect solution for rapid prototyping, functional parts, and large-scale production. For biocompatible applications, the Form 4BL offers expanded throughput and regulatory compliance for dental and medical manufacturing.
Description
Large-Format SLA 3D Printing. Fast. Accurate. Scalable.
Bring your biggest ideas to life—faster than ever—with the Formlabs Form 4L large-format 3D printer. Built for industrial performance, the Form 4L combines rapid masked SLA printing with a trusted materials library and exceptional print quality. Whether you’re prototyping oversized parts, validating low-tolerance assemblies, or scaling production, the Form 4L delivers unmatched speed, accuracy, and reliability in one streamlined platform.
For medical and dental professionals, the Formlabs Form 4BL brings the same large-scale performance with biocompatible capabilities and regulatory backing.
Key Features of the Formlabs Form 4L:
Print Big, Print Fast
The Form 4L uses Formlabs’ new Low Force Display™ Print Engine to deliver rapid, repeatable results—no matter the part size. A powerful combination of high-intensity LEDs, optical filters, and a durable LCD cures resin layers in record time. Most large prints complete in under 6 hours, boosting throughput without sacrificing precision.
Material Flexibility at Scale
Compatible with 23+ Formlabs resins and open to third-party materials through Open Materials Mode, the Form 4L gives you the freedom to match your application’s needs. Print parts that are impact-resistant, flexible, flame-retardant, or rigid—at full scale, with full confidence.
Precision You Can Trust
Engineered for tight tolerances, the Form 4L consistently delivers assemblies with ±0.15% dimensional accuracy in XY. With smooth surfaces, crisp edges, and easy-to-remove supports, your prints rival injection-molded quality—straight off the build platform.
Built-In Reliability
Designed to reduce downtime and improve efficiency, the Form 4L includes:
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Validated print settings for every material
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Factory-calibrated hardware
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Intelligent control systems for print success
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Long-lasting consumables that reduce replacement frequency
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Remote monitoring for peace of mind when you’re off the floor


Formlabs Form 4BL: Scalable Biocompatible 3D Printing
The Form 4BL is built for high-volume, large-format dental and medical 3D printing. With a build area 2.7x larger than the Form 4B and 4x the throughput of other dental printers, the Form 4BL makes it easy to scale operations while maintaining precision and compliance.
Compatible with 10+ Formlabs biocompatible resins, the Form 4BL supports a wide range of dental appliances, surgical guides, and anatomical models. Backed by ISO 13485 certification, FDA Master Files, and extensive regulatory support, the Form 4BL is ready for production from day one.
Existing Form 3B/+ users can request equivalency documentation to ensure a smooth transition to the Form 4BL.
The Perfect Print Deserves the Perfect Finish
Form Wash L and Form Cure L streamline resin post-processing with automated, hands-free cleaning and precision curing. Designed to work seamlessly with Formlabs SLA printers, this duo ensures your parts look great and perform even better—right out of the printer.
Form Wash L
Effortless, Mess-Free Resin Cleaning
Form Wash L delivers powerful, hands-free cleaning with adjustable agitation and flexible solvent options. Automatically lift parts from the wash cycle to air dry, while adjustable mounts and variable solvent volumes adapt to any build size. Compatible with IPA, TPM, and Formlabs Resin Washing Solution for a spotless finish—every time.
Form Cure L
Fast, Precise Post-Curing for Stronger, High-Performance Parts
Form Cure L delivers rapid, reliable post-curing using powerful LEDs, convective heat, and validated presets to enhance mechanical properties. Achieve higher strength, stiffness, and temperature resistance in minutes, with near-instant heat-up and uniform exposure. Designed to fit full-size Form 4 and Form 4L prints, Form Cure L makes finishing easy with pre-programmed cycles and a user-friendly design.
Why Choose Keystone Prototyping Solutions?
At Keystone, we help businesses and manufacturers implement cutting-edge 3D printing solutions that drive efficiency, innovation, and profitability. Whether you’re producing functional prototypes or scaling medical device production, the Formlabs Form 4L and 4BL give you the tools to succeed—faster, bigger, and more reliably.
Contact us today to request a quote or schedule a demo.