For teams working with large-scale 3D printing, the Formlabs Form 4L and Form 3L offer high-quality, reliable options for producing larger parts with detailed finishes. Both models bring high precision to industrial and commercial applications, but with different features that suit various needs. While the Form 3L is a solid choice for in-house, office-friendly production, the Form 4L takes large-format printing to a new level with even faster speeds and enhanced capabilities for intensive workflows.
Here’s a detailed look at how the Form 4L and Form 3L compare.
1. Build Volume and Applications
With a build volume of 33.5 × 20 × 30 cm (13.2 × 7.9 × 11.8 in), the Form 3L supports a range of larger prototypes and models, making it versatile enough for office or factory environments. Ideal for businesses looking to move large-scale prototyping in-house, the Form 3L is capable of printing life-sized models and complex parts that were previously outsourced.
Form 4L
With a build volume of 35.3 x 19.6 x 35.0 cm (13.9 × 77 × 138 in), the Form 4L offers a similar build volume but with enhancements in speed and material options that make it ideal for high-throughput production. Designed for faster turnarounds on large or intricate parts, it’s well-suited for users with greater volume needs or those who require extensive material compatibility.
Winner: Draw – Both models offer substantial build volumes, but the Form 4L adds performance advantages that may benefit high-demand environments.
2. Printing Technology
Form 3L
Utilizing Low Force Stereolithography (LFS), the Form 3L incorporates two Light Processing Units (LPUs) to ensure consistent detail across the entire build platform. This technology minimizes peel forces, resulting in smoother surfaces and reliable print success, even on complex parts.
Form 4L
The Form 4L employs Low Force Display (LFD) technology, which speeds up production by curing entire layers in one go. This layer-by-layer curing allows for faster prints without compromising accuracy, making it an efficient choice for production settings where time is essential.
Winner: Form 4L – The Form 4L’s LFD technology offers a speed advantage, especially for large-format prints.
3. Speed and Throughput
Form 3L
The Form 3L is optimized for high-quality prints, with a balanced speed suitable for most in-house prototyping needs. Draft Resin and other materials can be used to accelerate print times, though complex or large parts will take more time.
Form 4L
With its LFD engine, the Form 4L provides significantly faster print speeds. This capability makes it a better option for users needing rapid production cycles, especially in industries where large parts or quick turnarounds are critical.
Winner: Form 4L – The speed boost of the Form 4L enables faster production, making it ideal for businesses with high demands.
4. Material Compatibility
Form 3L
The Form 3L supports a wide selection of Formlabs resins, ranging from standard prototyping materials to engineering resins. Its dual-cartridge system allows for uninterrupted printing, particularly useful for long or multi-day prints.
Form 4L
The Form 4L goes further, expanding material compatibility to include third-party resins and more specialty materials, such as ceramics and polyurethanes. This open-material platform makes it highly adaptable for industries requiring specialized properties in their parts.
Winner: Form 4L – The broader range of certified materials provides greater flexibility for complex applications.
5. Ease of Use and Workflow Integration
Form 3L
With features like automatic resin dispensing and the PreForm software, the Form 3L is designed for intuitive use with minimal supervision. In-field repairs for components like the Light Processing Units and the optics window add to its practicality in various work environments.
Form 4L
The Form 4L includes similar user-friendly features but also integrates more advanced diagnostic tools and remote monitoring through Formlabs’ Dashboard. This setup allows users to track and manage prints from anywhere, ideal for larger operations requiring remote oversight.
Winner: Form 4L – Additional diagnostic and monitoring capabilities make the Form 4L better suited for busy production workflows.
6. Reliability and Maintenance
Form 3L
Designed for reliability, the Form 3L includes user-replaceable components that support 24/7 uptime. Integrated sensors help maintain optimal print conditions, allowing for consistent results even during lengthy print jobs.
Form 4L
The Form 4L’s fewer moving parts and advanced sensors provide a higher success rate, with less maintenance required over time. Its re-engineered consumables are built to last, adding to its suitability for demanding production schedules.
Winner: Form 4L – Enhanced reliability features and lower maintenance demands make the Form 4L preferable for continuous operations.
7. Part Quality and Finish
Form 3L
The Form 3L delivers a smooth surface finish and precise detail across large parts, thanks to its dual LPUs and refined resin management system. Printed parts resemble injection-molded quality, making it a great choice for high-fidelity prototyping.
Form 4L
In addition to matching the Form 3L’s quality, the Form 4L offers sharper details with LFD technology. The highly collimated light source and anti-aliasing features allow for subpixel-level precision, producing parts that require minimal post-processing.
Winner: Form 4L – Superior optics ensure the highest quality, particularly on intricate or production-grade parts.
8. Which Printer Should You Choose?
Choose the Form 3L if:
- You need a reliable, large-format printer for in-house prototyping.
- Your production volumes are moderate, and speed is not the top priority.
- You want an affordable entry into large-format printing with versatile material options.
Choose the Form 4L if:
- Fast print speeds and large-volume production are critical.
- You need compatibility with third-party or specialty materials.
- Your workflow demands a higher success rate and advanced diagnostic features.
The Form 3L and Form 4L are both strong contenders for large-format printing, each with distinct advantages depending on your needs. The Form 3L offers robust, affordable large-scale printing, ideal for prototyping and occasional production. Meanwhile, the Form 4L is built for higher productivity, with enhanced speed, material flexibility, and reliability. For businesses focused on scaling production or working with diverse materials, the Form 4L is likely the better investment, while the Form 3L remains an excellent choice for those prioritizing quality and cost-efficiency.
For businesses and professionals in need of fast, high-quality 3D printing, the Formlabs Form 4 and Form 4L each offer distinct advantages. Both models are known for precision and reliability, making them well-suited for industrial prototyping and production applications. The Form 4L, however, provides a larger build volume, allowing for more efficient production of larger parts as well as the ability to print larger quantities of smaller parts.
Here’s an overview of their key features and how each printer may suit different production requirements.
1. Build Volume and Part Size
The Form 4 is a powerful choice for small to medium-sized parts with detailed features, but the Form 4L is designed for larger applications.
- Form 4: With a build volume of 20.0 × 12.5 × 21.0 cm, it’s well-suited for high-precision prototypes, small components, and assemblies.
- Form 4L: Expands to a build volume of 35.3 × 19.6 × 35.0 cm, accommodating parts that are up to 4.6x larger than those possible with the Form 4. This enables production of sizable prototypes and large-format industrial parts. Additionally, the large build volume allows for printing of higher numbers of parts.
Winner: Form 4L – Perfect for large parts and batch printing without compromising on quality.
2. Print Speed
Both the Form 4 and Form 4L use Low Force Display (LFD) technology for fast and precise printing. The Form 4L’s larger build area can handle larger layers more quickly, which speeds up the printing process for big parts.
- Form 4: Ideal for fast small-batch or single-part production, with the ability to complete most prints within two hours.
- Form 4L: Capable of producing large parts in under six hours, making it an excellent option for industries needing big parts on tight timelines. Also, the larger volume is nearly 3 times as large as the Form 4. In that case, the 4L is actually much faster than the Form 4 when printing parts that would normally only be printed one at a time on the Form 4
Winner: Form 4L – Efficient for larger parts and quick prototyping of multiple parts simultaneously.
3. Print Quality and Surface Finish
Both printers offer high-quality finishes and exceptional detail, with anti-aliasing and advanced optics for smooth, sharp edges.
- Form 4: Provides dimensional accuracy within ±0.15% and delivers surface finishes that rival injection molding.
- Form 4L: Matches the print quality of the Form 4, ensuring that large parts maintain the same smooth surface finish and high level of detail.
Winner: Draw – Both printers offer exceptional quality, with Form 4L retaining the same precision on larger parts.
4. Materials and Versatility
Both models support a vast range of Formlabs resins and are compatible with certified third-party materials, adding to their versatility.
- Form 4: Optimized for engineering-grade materials, including impact-resistant, flexible, and flame-retardant options.
- Form 4L: Supports the same extensive material range but allows for larger quantities, which is essential for sizable industrial parts or high-volume production.
Winner: Draw – Both printers provide robust material compatibility, giving users flexibility across applications.
5. Ease of Use and Workflow Integration
Formlabs prioritizes ease of use and smooth workflow with PreForm software, integrated cameras, and remote monitoring options for both printers. The Form 4L adds features like a 5L Resin Pumping System and automatic resin dispensing to handle the demands of large-scale printing.
- Form 4: Simple enough for new users to operate within 15 minutes, with a straightforward setup process.
- Form 4L: Adds efficiencies like automated resin handling, reducing manual intervention for large prints.
Winner: Form 4L – Simplified for high-volume work with advanced resin management.
6. Reliability and Consumable Management
The reliability of both the Form 4 and Form 4L is reinforced by intelligent control systems, validated print settings, and re-engineered consumables for long-lasting performance.
- Form 4: Features factory calibration and light touch supports to reduce peel forces and prevent print failures.
- Form 4L: Includes the same reliability features and is built to handle the additional load of larger prints with robust consumables and advanced diagnostic tools.
Winner: Draw – Both printers are engineered for dependable performance, with the Form 4L optimized for bigger prints.
7. Post-Processing
Both printers integrate with Formlabs’ Form Wash and Form Cure systems Both machines also offer a flexible build plate (Form 4L Flexible Build plate available soon).
- Form 4: A flexible build plate option for the Form 4 means part removal is very simple.
- Form 4L: The Form 4L also offers a flexible build plate.
Winner: Draw – Both printers offer flexible build plates for easy part removal..
8. Pricing and Value
The Form 4 offers a cost-effective solution for small to medium-sized parts with high-quality output. The Form 4L, while more expensive, justifies its price with a larger build volume, faster production times for big prints, and lower operational costs for batch production.
- Form 4: Ideal for smaller businesses or those who prioritize precision in compact prints.
- Form 4L: Suited for high-volume, industrial applications where large-part production is essential.
Winner: Depends on need – Form 4 for affordability, Form 4L for large-scale production and batch printing.
Which Printer Should You Choose?
- Choose the Form 4 if you need a high-quality, compact solution for prototyping and producing small parts, especially in a cost-effective setup.
- Choose the Form 4L if you require a larger build volume, faster print speeds for big parts and multiple parts, and an optimized workflow for high-volume production.
Both the Form 4 and Form 4L offer outstanding value for different production needs. The Form 4 provides a powerful, affordable option for precise smaller parts, while the Form 4L enables faster, large-scale production without compromising on quality.
Whether you’re focused on cost-effective prototyping or large-scale production, you can find both models on EAC Additive’s e-store to fit your specific manufacturing goals.
In the world of professional-grade 3D printing, the Formlabs Form 3+ and Form 4 are both stand-out, premier options. Both models deliver exceptional part quality, meeting the demands of industrial prototyping and production. However, the Form 4 introduces MSLA (Masked SLA) technology, enhancing speed, reliability, and automation.
This comparison breaks down the key differences, strengths, and trade-offs to help you decide which model best fits your needs. You can purchase both of these printers on the EAC Additive eStore.
1. Print Technology Comparison
Form 3+: Low Force Stereolithography (LFS):
- Utilizes a flexible tank membrane and a moving Light Processing Unit (LPU) ‘laser’.
- Rollers press the membrane against the build platform, gently ‘rolling’ each layer onto it, which reduces the risk of print failures and supports a broader range of materials.
- The LFS process is slower and requires regular maintenance due to the delicate parts like galvanometers and lasers in the LPU.
Form 4: Low Force Display (LFD):
- Employs a durable tank membrane paired with a non-mechanical DLP (Digital Light Processing) display for layer creation.
- The DLP display cures an entire cross-section at once, significantly speeding up the printing process.
- Features a dimpled surface beneath the membrane to mimic LFS flexibility and reduce wear, with a tilting tank to minimize detachment force.
Winner: Form 4 – While both printers excel, the Form 4’s DLP technology offers faster, more precise results with fewer maintenance requirements.
2. Speed
Speed is a major advantage of the Form 4. Its DLP engine cures entire layers in seconds, resulting in print times up to 5x faster than the Form 3+.
- Form 3+: Optimized for quick support printing, but the laser-based system slows down with large or intricate parts.
- Form 4: Designed for high-volume production, the Form 4 cures cross-sections at once, dramatically cutting print times.
Winner: Form 4 – Ideal for businesses that need high-speed outputs and rapid production workflows.
3. Print Quality and Accuracy
Both models offer 25-micron resolution, but the Form 4’s improved optics provide better accuracy and detail.
- Form 3+: Delivers smooth finishes and fine details, perfect for engineering and biocompatible applications.
- Form 4: Produces sharper edges and precise dimensional accuracy, making it a great choice for functional prototypes that need to match injection-molded quality.
Winner: Form 4 – Consistently delivers superior precision, especially on complex or production-grade parts.
4. Material Compatibility
- Form 3+: Compatible with a wide range of Formlabs resins, including flexible and dental options, with light-touch supports that simplify post-processing.
- Form 4: Expands material compatibility to over 37 certified resins, including third-party options like PU Rigid 1000 and Alumina 4N, opening new possibilities for industrial, medical, and engineering applications.
Winner: Form 4 – Its open platform offers unmatched flexibility with certified third-party resins.
5. Ease of Use and Workflow Integration
- Form 3+: Designed with user-replaceable components and a straightforward cartridge system, making it easy to switch materials. However, the flexible tanks require careful handling and have a limited lifespan.
- Form 4: Simplifies workflows with more durable tanks and square resin cartridges that are easier to store and use less packaging material.
Winner: Form 4 – With its easier setup and improved consumables, the Form 4 streamlines the printing process.
6. Reliability and Print Success Rate
Both printers are known for reliability, but the Form 4 offers a higher success rate, thanks to fewer moving parts and enhanced sensors.
- Form 3+: Uses sensors and light-touch supports to prevent failures but requires regular maintenance due to the many mechanical components.
- Form 4: Features advanced sensors that detect issues early, ensuring smoother operations with minimal intervention.
Winner: Form 4 – Its simplified design makes it the better option for continuous or large-scale production.
7. Post-Processing Workflow
Both models integrate with Formlabs’ Form Wash and Form Cure systems, making post-processing simple and efficient.
- Form 3+: Easy-to-remove supports and seamless integration with Form Wash and Form Cure ensure professional results.
- Form 4: MSLA technology reduces the need for supports, and small touchpoints make support removal even easier.
Winner: Form 4 – Better support management reduces post-processing time.
8. Pricing and Value
- Form 3+: It’s a cost-effective solution for smaller teams or businesses seeking high-quality results without a large investment.
- Form 4: While more expensive, it offers long-term value with faster production, lower operational costs, and support for sustainable practices by minimizing material waste.
Winner:
- Form 3+: Best for those prioritizing affordability.
- Form 4: Provides better value for high-volume production environments.
9. Which Printer Should You Choose?
Choose the Form 3+ if:
- You need an affordable solution for prototyping or small-batch production.
- Prints taking hours vs minutes aligns with your operating rhythm and is acceptable when taking pricing into consideration
- You want a reliable, lower-maintenance printer with quick setup.
Choose the Form 4 if:
- Fast printing speeds and automation are critical.
- You require access to advanced workflow tools and third-party materials.
- Your business demands high-volume production with minimal downtime.
10. Final Verdict: Form 3+ or Form 4?
Both the Form 3+ and Form 4 are outstanding printers, each excelling in specific areas. The Form 3+ is ideal for smaller teams or individuals looking for professional results on a budget. Meanwhile, the Form 4 is the clear choice for businesses focused on scaling production, speed, and precision.
If speed, reliability, and versatility are top priorities, the Form 4 offers unparalleled performance. However, for those seeking affordability without sacrificing quality, the Form 3+ remains a fantastic option.
