Resin 3D printing has transformed how creators turn digital designs into physical models. Using UV light to harden liquid resin, this method produces highly accurate prints with smooth finishes. It’s popular among makers working on projects like gaming miniatures, jewelry, and engineering prototypes. This technology is ideal for those who want sharp design features and visually stunning results. As resin 3D printing technology advances, printers have become faster, easier to use, and capable of producing exceptional models. Elegoo has become a go-to brand for resin 3D printers thanks to its mix of advanced tech and easy-to-use designs. Their printers are great for anyone from beginners to pros.  In this article, we’ll review the Elegoo Mars 4 Ultra. We’ll cover its advanced features, performance, and why it has become popular among the resin 3D printers in the market.

Design and Build Quality

The Mars 4 Ultra has a well-built structure that balances durability and meticulous engineering. Its frame is constructed from high-grade materials, giving it a sturdy feel. Weighing 6.5 kg, the printer is well-constructed without being too heavy to move around when needed. Its compact design, measuring 227 x 227 x 443.5 mm³, makes it suitable for most workspaces while still packing advanced printing features. The build platform features a laser-engraved surface that improves resin adhesion, reducing print failures even on large models. The printer’s Z-axis includes a linear guide rail system with an accuracy of 0.02mm. This ensures smooth and stable movement for flawless prints. Elegoo also added a raised edge on the mid-plate to prevent resin from seeping into the machine’s interior, protecting essential components from damage.

Key Features and Specifications

The Elegoo Mars 4 Ultra brings cutting-edge features designed for faster, more precise, and efficient resin 3D printing. Its 7-inch 9K monochrome LCD with an impressive resolution of 8520×4320 delivers ultra-sharp prints with exceptional surface smoothness. With a maximum print speed of 150mm/h, the Mars 4 Ultra significantly reduces print times without compromising quality.

Its advanced COB light source, combined with a Fresnel collimating lens, ensures even UV light distribution with 92% light uniformity, resulting in consistent curing across the entire build area. The upgraded Linux OS enables high-speed Wi-Fi file transfer and efficient system management. Additional features like a 4-point leveling system, enhanced heat dissipation, and a leak-proof design add reliability and ease of use, making it a top choice for both beginners and professionals.

Comparisons

Mars 4 Ultra vs. Mars 3 Pro

The Mars 3 Pro has long been a favorite for its reliable print quality and solid design. However, the Mars 4 Ultra raises the bar with higher resolution, faster printing, and improved user-friendly features.

• Resolution and Display: The Mars 3 Pro features a 6.6-inch 4K monochrome LCD with a resolution of 4098×2560 for excellent print accuracy. The Mars 4 Ultra takes it further with a 7-inch 9K monochrome LCD boasting a stunning resolution of 8520×4320, delivering sharper prints with an 18-micron XY resolution.
• Printing Speed: The Mars 3 Pro reaches a maximum speed of 80mm/h, making it suitable for various print tasks. In comparison, the Mars 4 Ultra accelerates to 150mm/h with its ACF release liner film and ELEGOO rapid standard resin, cutting print times dramatically while maintaining outstanding quality.
• Smart Features: While the Mars 3 Pro supports USB file transfer and offline printing, the Mars 4 Ultra enhances usability with Wi-Fi transfer at speeds of 6-10Mbps. Its detachable Wi-Fi antenna and compatibility with 2.4G and 5G networks simplify file management from computers or mobile devices.

Mars 4 Ultra vs. Saturn 2

The Elegoo Saturn 2 is a powerful resin printer with a large build volume and advanced features. However, the Mars 4 Ultra focuses on delivering ultra-high-resolution prints and faster speeds in a more compact design.

• Resolution and Display: The Saturn 2 is equipped with a 10-inch 8K monochrome LCD and a resolution of 7680×4320, for high-quality results. The Mars 4 Ultra surpasses this with a 9K monochrome LCD and a resolution of 8520×4320. This feature enables even more detailed prints with its 18-micron XY resolution.
• Printing Speed: The Saturn 2 supports speeds of up to 90mm/h, ideal for large-format models. The Mars 4 Ultra has an enhanced ACF release liner and powerful curing system. This enables it to reach 150mm/h, making it a faster option for high-detail projects.
• Smart Features: The Saturn 2 includes USB and Ethernet connectivity for reliable file transfer. The Mars 4 Ultra expands on this with high-speed Wi-Fi transfer, a Linux-based operating system, and an intuitive touchscreen interface, offering a more streamlined workflow.

Real World Applications

The Elegoo Mars 4 Ultra excels in a variety of real-world applications, thanks to its advanced printing technology and high-resolution capabilities. Its ability to produce ultra-sharp models makes it suitable for industries requiring detailed and accurate prototypes, artistic models, and functional parts. Here are some key areas where the Mars 4 Ultra is useful:

• Miniature and Model Making: Hobbyists and collectors can benefit from the Mars 4 Ultra’s ability to create finely detailed figurines, game pieces, and collectible models. Its high resolution captures even the smallest design elements, making it a favorite for tabletop gamers and custom figures creators.
• Product Prototyping: Engineers and designers can create functional prototypes with precise fit and finish. The printer’s fast speed and consistent accuracy make it ideal for rapid prototyping. And in turn allows for quick design iterations in industries like automotive, aerospace, and electronics.
• Dental and Medical Models: Dental labs and medical professionals can rely on the Mars 4 Ultra to produce accurate dental models, orthodontic trays, and surgical guides. Its precise curing process ensures reliable results that support medical procedures and treatment planning.
• Custom Art and Crafts: Artists and creators enjoy using the Mars 4 Ultra for custom art projects, sculptures, and decorative items. Its ability to produce unique, high-quality pieces opens up endless possibilities for creative expression.

Conclusion

The Elegoo Mars 4 Ultra raises the bar for resin 3D printing with its advanced features and powerful performance. Its 7-inch 9K monochrome LCD with a resolution of 8520×4320 delivers stunning print quality that captures fine design features. The combination of its COB light source and Fresnel collimating lens ensures even UV light coverage for consistent results on every print. Printing at speeds of up to 150mm/h, it handles projects quickly without losing accuracy. High-speed Wi-Fi transfer and an easy-to-use 4-point leveling system simplify setup. The leak-proof design keeps the workspace clean and protected. With its advanced cooling system and air purifier, you can print comfortably in any environment.