Elegoo Saturn 4 Ultra 12K: High-Speed, High-Precision SLA Resin 3D Printer

Elegoo Saturn 4 Ultra — 12K MSLA Resin 3D Printer with Tilt Release, 218×122×220mm

The Elegoo Saturn 4 Ultra is the 12K flagship of Elegoo's Saturn 4 line — a 10-inch MSLA resin printer with 11520×5120 pixel resolution, Tilt Release Technology for fast layer separation, a large 218.88×122.88×220mm build volume, smart tank heating, and an AI camera with real-time monitoring. It delivers professional-level resin print quality with an accessible setup experience designed to work well from the first print.

12K Resolution — 19×24 µm Pixel Size

The Saturn 4 Ultra's 10-inch monochrome LCD delivers 11520×5120 pixels — a 12K panel with an XY pixel size of 19×24 µm. That's exceptional resolution for a printer at this build volume and price point, capturing fine surface textures, sharp edges, and intricate geometry with high clarity. The monochrome panel cures faster than RGB screens and maintains consistent output over a longer lifespan.

Tilt Release Technology — Faster Prints, Less Stress on Models

Instead of pulling the build plate straight up after each layer — which creates high peel forces and risks delamination or model failure — the Saturn 4 Ultra tilts the resin vat to separate the cured layer from the release film at an angle. This dramatically reduces stress on the model during peeling, enabling faster print speeds while improving reliability on complex, thin-walled, or tall models.

Smart Tank Heating

Cold resin is the leading cause of resin print failures — it flows poorly, cures inconsistently, and produces bubbles and layer separation. The Saturn 4 Ultra's integrated heating system monitors vat temperature in real time and maintains resin at an optimal temperature automatically, improving fluidity, layer adhesion, and success rates regardless of ambient room temperature.

Specifications

Saturn 4 Ultra vs Saturn 4 Ultra 16K — Which One?

Both printers share Tilt Release Technology, smart tank heating, and the same build volume class. The key difference is resolution: the Saturn 4 Ultra delivers 19×24 µm pixel size at 12K, while the Saturn 4 Ultra 16K achieves 14×19 µm — finer detail at a higher price. If you're printing miniatures, jewelry, or dental models where every micron matters, the 16K is worth the premium. For prototyping, cosplay props, display models, and general hobbyist use, the 12K Saturn 4 Ultra delivers outstanding results at a more accessible price point.

Who Is This For?

The Saturn 4 Ultra is the right starting point for makers moving up from a smaller resin printer who need more build volume without sacrificing resolution. It suits tabletop miniature hobbyists printing batches of figures, product designers prototyping mid-size parts, and creators who want reliable automated resin printing without the complexity of managing temperature, leveling, and monitoring manually.

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