Review: Elegoo Saturn 4 Ultra 3D Printer – Cutting Edge, User-Friendly Resin Printing

The Elegoo Saturn 4 Ultra is the latest powerhouse in resin 3D printing, offering a blend of precision and performance that’s hard to beat at its price point. Resin printing is generally know to give super shar results and excellent quality pieces but with a steep learning curve and numerous downsides.

Will the Elegoo Saturn 4 Ultra’s 12K Mono LCD, Tilt Release Technology, and AI-assisted monitoring, finally give us a 3D printer tailored for creators who need power and detail without sacrificing ease of use? Let’s find out!

Unboxing and Setup

Straight out of the box, the Saturn 4 Ultra impresses with its modern looks and robust design. The packing is admirably solid with every item nicely encased to prevent any damage. On opening it up, It includes everything needed to start printing: from an unexpected Wi-Fi antenna and build plate to gloves and a scraper, Elegoo seems to have thought of everything. Setting it up is generally straightforward, and thanks to its auto-leveling function and one-click self-check, the initial calibration is refreshingly hassle-free.

The machine performs a self-check of all components, ensuring everything is primed before printing. With the Saturn 4 Ultra’s intelligent mechanical sensor and automatic levelling, the setup is genuinely user-friendly, allowing even beginners to dive right into what was the once the preserve of power-users.

New User-Centric Design and Features

The Saturn 4 Ultra introduces several smart design tweaks, all aimed at making resin printing easier and more intuitive. The new latch mechanism allows one-handed operation with flat, secure contact, streamlining the process and reducing setup time. Add to that the flip-up cover – a fantastic upgrade, especially if you work with resin and don’t want to handle the cover with sticky gloves.

This design separates the cover from the exhaust tube, improving ventilation while keeping the lid operation simple and clean.

The inclusion of a Drip Bib, while a bit unusual in appearance, is a thoughtful and intellgent addition. It prevents resin from dripping into the machine when the Tilt Release is activated. This small but significant feature protects the internal components from potential resin spills, keeping you and your machine safe from dubious chemicals and provides ease of maintenance.

FYI – Seriously! You need to be wearing gloves. 3d print resin is fairly evil, unpleasant stuff and though the Saturn 4 does it’s best to keep it away from you as much as possible, please use common sense, don’t get it on you, or in you. Wear the right gear when handling!

Smart Tilt Release Mechanism

As I’ve mentioned it already, I’d better explain, one of the standout features of the Saturn 4 Ultra is its Tilt Release Technology. Unlike traditional resin printers where the build plate moves vertically to separate each layer, the Saturn 4 Ultra actually tilts the resin tank during layer separation. This reduces the stress on the printed model and the build plate, potentially increasing the lifespan of the PFA release film and other components.

An odd thing that’s been reported across the internet is that users have noticed the reduction or complete removal of tiny bubbles that often appear on the final layers of prints on other competing devices. I haven’t personally seen this yet, and I’m not 100% sure if its because of the Tilt Release mechanism or the new PFA release film. It may be circumstantial but either way, reports seem to show an appreciable improvement that results in smoother surfaces and higher-quality prints.

Built-In Resin Calibration for Precision

Elegoo has taken the guesswork out of exposure settings by including a Resin Calibration feature directly on the printer. This function allows users to test up to four different exposure times on a single print by dividing the screen into four quadrants, each set to a different exposure value. Previously, achieving this level of fine-tuning required printing multiple test models and managing exposure times manually, which was time-consuming and wasteful on resin.

While you need to create a build plate with multiple copies of the model for this calibration feature, it’s still a huge time-saver. Instead of relying on external software or complex setups, users can now easily run exposure tests directly on the printer. For anyone experimenting with different resins or aiming for exacting standards, this built-in tool adds a new layer of convenience and confidence in your final output.

Wi-Fi and Real-Time Monitoring with the AI Camera

Connectivity and monitoring are areas where the Saturn 4 Ultra really stands out. With Wi-Fi capabilities, you can now send files wirelessly to the printer, bypassing the need for a USB stick or SD card. It’s a seamless feature that makes managing print files much easier, especially if you frequently adjust or update your models.

As much as I hate to admit it, I have fallen into the rabbit hole of watching my 3d printers printing instead of getting on with anything else and the new AI camera adds an entirely new level of functionality, providing real-time monitoring of prints with low latency and impressive clarity, even in low-light conditions. This camera isn’t just for remote viewing; it also serves a functional purpose by detecting potential issues like warped models or an empty build plate. Users are alerted to these problems immediately, allowing you to get in there fast to avoid failed prints. For users who enjoy monitoring their prints from another room – or even while away – And more importantly for users who have experience of spectacular failures, the camera is a super-practical, useful and enjoyable feature.

Quick release PFA Film & COB Light

Elegoo’s design enhancements extend to the PFA release film and COB light source carried over from earlier models, but with added improvements in the Saturn 4 Ultra. The Fresnel Collimating Lens is a particularly interesting addition that helps the COB light source emit parallel light beams, leading to much more accurate and even exposure across the print bed. The lens minimises light scattering, which essentially means you get ultra-smooth surfaces and better-defined details, especially on detailed models.

The PFA release film itself is optimised to reduce resistance during layer separation, which gives you less stress on the model and the build plate. Paired with the Tilt Release Technology, this enhanced release film offers both consistency and reliability in print adhesion and removal, making it easier for users to achieve high-quality prints with less hassle.

Intuitive User Interface and Smart Self-Check Features

Operating the Saturn 4 Ultra is incredibly intuitive, thanks to its 4-inch capacitive touchscreen that’s responsive and easy to navigate. The interface is clean and straightforward, allowing users to quickly select files, adjust settings, and initiate prints without diving into complicated menus though the power to get into the nitty gritty is always at your disposal.

Each time you power on the machine, it performs a self-check of critical components, such as the sensor, build plate, and resin levels. This one-click self-check feature ensures that everything is in working order before a print starts, minimising the risk of errors or mishaps mid-print. The automatic bed levelling and the smart mechanical sensor further enhance usability, making it easy for anyone, from beginners to experts, to get started right away.

Quality of Life Details and Added Convenience

Elegoo’s dedication to user friendliness is evident in several small but impactful design choices. The quick-release build plate allows for easy detachment of completed prints, while the dual pour spouts on the resin tank make it simpler to drain resin after each session. Additionally, the flip-up cover design minimises the hassle of opening and closing the printer, especially when wearing gloves.

The printer is also equipped with residue detection and a levelling failure alarm. These safety features enhance reliability by preventing potential damage to the LCD screen and alerting users to any calibration issues. Each of these additions reinforces Elegoo’s goal of making the Saturn 4 Ultra a dependable and user-friendly machine.

Print Quality and Real-World Performance

Elegoo’s enhancements in print fidelity are particularly noticable when working with complex models. During testing, we printed a variety of intricate designs, including a chess set with fine details and overhangs, to assess the Saturn 4 Ultra’s performance. The results were outstanding, with crisp, clean edges and a remarkable level of detail. The 12K LCD screen resolution, combined with the precise XY positioning of 19×24μm, ensures even the smallest features come out clearly. The printer easily handled overhangs and small contact areas, delivering flawless, high-quality prints that rival much pricier models.

The Saturn 4 Ultra’s print bed adhesion is another strong point. Thanks to the optimised PFA release film and the COB + Fresnel Lens setup, prints stay securely in place during the entire process, and removal is a breeze. The adhesion is strong enough to prevent accidental shifts but gentle enough to make detaching prints effortless, reducing the risk of damage to both the print and the build plate.

Final Verdict: A powerful Resin 3D Printer for Enthusiasts & Professionals

So, the bottom line here is, the Elegoo Saturn 4 Ultra really is a standout machine in the resin 3D printer market, offering an impressive range of features typically found only in higher-end models. Elegoo’s Saturn 4 Ultra manages to combine powerful hardware with user-friendly features. Each feature and improvement, from the smart sensor system to the high-resolution camera, is designed to make 3D printing accessible without sacrificing quality or functionality.

Whether you’re printing a detailed figurine or complex prototypes, the Saturn 4 Ultra combines cutting-edge technology with practical usability, making it one of the most versatile resin printers available. On sale now for only $399, this 3D printer might be just the right fit for you. As a hobbyist who’s used to lower grade printers, the Saturn 4 Ultra feels like a huge, premium, leap forward in build quality and technology. For anyone serious about 3D printing, this model is an outstanding investment.