Elegoo Saturn 4 Ultra

The Elegoo Saturn 4 Ultra is the loaded Saturn 4: same 10-inch 12K LCD, plus a tilting vat, Wi-Fi and a monitoring camera. Tom's Hardware gave it 4 out of 5 and an Editor's Choice badge for finally improving the machine instead of just the light engine.

Build volume is 218.88 × 122.88 × 220 mm and the panel runs 11520 × 5120 with non-square 19 × 24 μm pixels. The vat tilts away from the print, cutting peel force and lifting speed to 150 mm/h against 70 mm/h on the plain Saturn 4, with a layer cycle near 5.5 seconds. You also get a 4-inch capacitive touchscreen, EL3D-4.0 firmware, dual-band Wi-Fi, and factory tempered glass over the LCD.

Pros

• The speed shows on real models: Tom's Hardware printed a Rocket bust in 3 h 13 min and a Cinderwing dragon in 1 h 21 min at 0.05 mm layers on ordinary resin
• Auto leveling off built-in sensors — no paper shim, no hex key, the plate squares itself against the glass
• The camera streams prints and records time-lapses, and jobs go over the network — iXBT's reviewer calls the end of USB-stick runs the biggest practical win
• The hinged hood lifts with one hand, so there's no lid to park and no fingerprints to wipe off the acrylic
• Resin level and debris sensors plus a startup self-check keep it from printing over a cured failure stuck to the film
• The quick-release plate on MGN rails comes off in one motion and needs no re-leveling, and the built-in exposure test compares 4 to 8 samples per run

Cons

• The camera only catches obvious trouble: it spots an empty plate and shoots time-lapses from roughly 50 mm up, and it missed a peeling print in Tom's Hardware testing
• Camera and network printing depend on ChituBox and Chitu Manager, and the manual never explains that
• No vat heater — that came with the 16K version — so resin thickens in a cool room and exposure has to go up. No air purifier either, just a rear port for a duct
• Daily annoyances: the bulky plate is awkward to clean and barely fits the Mercury wash station, and the side-mounted Wi-Fi antenna sits behind a metal shell

People buy the Ultra for large busts, batches of miniatures and enclosure parts: a 219 × 123 mm plate holds about twice as many small pieces per run as a 7-inch Mars. Beginners get an easy start too — leveling is automatic and the print is on your phone.

Bottom line: the best-balanced machine in the line — speed and automation without pricey high-speed resin; a heated vat and 16K cost extra.

Reviews

• Tom's Hardware — Elegoo Saturn 4 Ultra Review: Huge Innovation in Resin 3D Printing (4/5)
• FauxHammer — The Best Elegoo Saturn 4 Ultra Review on The Internet
• Uncle Jessy — The Easiest Resin 3D Printer! Elegoo Saturn 4 Ultra
• Geek Detour — Saturn 4 Ultra: Elegoo's Biggest Upgrade