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Elegoo Saturn 4 Ultra (12K) — Product Research

Published · Researched 2026-09-20

Research date: 2026-09-20 · All prices/claims dated; stale items flagged. Re-verify live before acting.

2026 Version Check (done first, per brief)

NO substitution made. As of 2026-09-20, Elegoo has NOT released a "Saturn 5":

  • At Formnext 2025 (Nov 2025), Elegoo told Fauxhammer directly that the Saturn 5 and Mars 6 were not shown and were "expected next year" (i.e. 2026), with development underway (fauxhammer.com, Nov 2025).
  • Multiple searches (Sept 2026) found no Saturn 5 product page, buy link, price, unboxing, or pre-order — only a rumor/SEO article (3dprintmentor.com) that describes a "Saturn 5" with specs identical to the Saturn 4 Ultra 12K (12K screen, 218×123×220 mm build volume), which appears to be hallucinated content, not evidence of a real product.
  • Elegoo's own US store ("For Saturn" accessories collection, crawled ~June 2026) still lists spare parts under "Saturn 4 / 4 Ultra / 4 Ultra 16K" — no Saturn 5 parts.
  • What did happen in this generation: a Saturn 4 Ultra 16K refresh was unveiled January 2025 (PR Newswire via engineering.com / technode.global) and is still sold as "HOT / NEW" on us.elegoo.com (fetched live 2026-09-20).

Subject of this file: Elegoo Saturn 4 Ultra 12K (the 2024 flagship), with the 16K variant noted where it differs.

1. Overview

  • What: The Elegoo Saturn 4 Ultra is a consumer MSLA (masked stereolithography) resin 3D printer — Elegoo's Saturn-line flagship since its September 2024 launch. It prints by curing 405 nm UV photopolymer resin layer-by-layer through a monochrome LCD mask.
  • Maker: Elegoo (Shenzhen, China). Founded 2015; per a January 2025 company press release it sells in 90+ countries/regions, did ~$200M revenue in 2023, with ~700 employees (PR Newswire via wire.expertini.com, Jan 2025 — stale, company self-reported).
  • Positioning: Mid-size prosumer/hobbyist machine — a jump in automation over the Saturn 3 Ultra (2023): tilt-release vat, one-click auto-leveling, built-in AI camera, Wi-Fi file transfer, smart mechanical sensors, flip-up hinged UV hood (no more lifting a heavy cover off).
  • 2026 context: Still actively sold by Elegoo US (both 12K and 16K versions) and actively discussed by owners in Facebook groups in September 2026 (see Support reality / Community verdict). Tom's Hardware named it its "best resin 3D printer choice for 2025" (Nov 2025 article).

2. Key specs table (Saturn 4 Ultra 12K)

Source: Elegoo official product page specs (ca.elegoo.com product page; corroborated by bestchina3dprinters.com review quoting Elegoo's official pages, article ~Feb 2026) and Tom's Hardware spec table (2024–2025).

Spec Detail
Technology MSLA (LCD-based UV photocuring)
LCD size / type 10-inch 12K monochrome LCD
Screen resolution 11520 × 5120 pixels
XY resolution 19 × 24 μm
Layer thickness 0.01–0.2 mm
Z-axis accuracy 0.02 mm
Build volume 218.88 × 122.88 × 220 mm (8.6 × 4.8 × 8.6 in)
Max print speed 150 mm/h (fast mode; normal exposure ~2.5 s/layer)
Light source COB + Fresnel collimating lens, 405 nm; ≥92% light uniformity
Release system PFA release film + Tilt Release Technology (vat tilts to peel each layer — faster, gentler peel)
Leveling One-click automatic leveling (intelligent mechanical sensor)
Screen protector 9H hardness tempered glass
Touch screen 4-inch capacitive touch
Camera Built-in AI camera: failure detection (empty plate, warping), time-lapse, real-time monitoring
Sensors Smart mechanical sensor: resin-low/foreign-object detection, power-loss resume, resin calibration
Connectivity Wi-Fi + USB (6–10 Mbps transfers, Wi-Fi cluster printing, OTA firmware updates)
System EL3D-4.0, 8 GB ROM
Slicer ChituBox Basic included on USB stick; also supports SatelLite (Elegoo's slicer) and third-party slicers (Lychee used by owners)
Body Solid metal body; flip-up hinged UV hood
Machine footprint 327.4 × 329.2 × 548 mm (12.9 × 12.9 × 21.6 in)
Weight 14.5 kg (32 lb)
Power 100–240 V, 50/60 Hz, 24 V 6 A
Resin compatibility Any 405 nm UV photopolymer resin (Elegoo standard/ABS-like/water-washable; third-party resins work — reviewers printed with third-party resins). Resin vat holds ~1 L to the MAX line (3djake.com)

Saturn 4 Ultra 16K variant (unveiled Jan 2025; current "HOT / NEW" item on us.elegoo.com, fetched live 2026-09-20): 10-inch 16K mono LCD, 15120 × 6230 px, ~14 × 19 μm XY (per Jan 2025 press release and a 2026 YouTube review); build volume 211.68 × 118.37 × 220 mm; adds smart tank heating (holds resin at 30 °C) and an upgraded AI camera with built-in light; otherwise same tilt-release/auto-level platform. Note the 16K trades a slightly smaller XY footprint for finer pixels.

3. Pricing

Prices move constantly on Elegoo's store — re-verify live. USD unless noted. Elegoo runs frequent sales; the "compare-at" (was) prices shown on its own pages vary between crawls.

Item Price Source & date
Saturn 4 Ultra 12K — launch MSRP (Sept 2024) $399 techtimes.com, firstquadcopter.com, gamingtrend.com launch coverage (Sept 2024). Verified across three sources.
Saturn 4 Ultra 12K — current, us.elegoo.com $399.00 (page shows compare-at $593.99) us.elegoo.com product page, search-result crawl ~19 days before 2026-09-20 (page live; not fetched today, treat as recent).
Saturn 4 Ultra 12K — bundle (printer + 1 kg resin for $1) $360.00 (was $525.00) us.elegoo.com bundle page, crawl ~16 hours before 2026-09-20.
Saturn 4 Ultra 12K — pre-owned (Elegoo official) $353.99 (was $524.00); pre-owned = returned items, NOT refurbished, no returns us.elegoo.com pre-owned page, crawl ~35 days before 2026-09-20.
Saturn 4 Ultra 12K — third-party US reseller $426.99 (was $449.99) woodartsupply.com, crawl ~40 days before 2026-09-20. 3dprinteddecor.com (Aug 2026) quotes $449.99.
Saturn 4 Ultra 16K — launch (Jan 2025) $519.99 Elegoo press release via engineering.com / technode.global / cerebral-overload.com (Jan 2025).
Saturn 4 Ultra 16K — current, us.elegoo.com $399.00 (was $649.99), labeled HOT/NEW us.elegoo.com product page, fetched live 2026-09-20.
Mercury XS wash+cure bundle — Elegoo's recommended station $115 (was $249) — STALE: Black Friday Nov 2025 price per Tom's Hardware; re-verify current price tomshardware.com, Nov 2025 (~297 days old).
Spare LCD screen (Saturn 4 & 4 Ultra) $114.99 us.elegoo.com "For Saturn" accessories, crawl ~June 2026.
Spare metal resin tank (Saturn 4 & 4 Ultra) $45.99 same as above, ~June 2026.
Spare build plate (Saturn 4/4 Ultra/4 Ultra 16K) $50.00 same as above, ~June 2026.

Pricing note: Elegoo's displayed MSRP/compare-at for the 12K varies across pages ($524 vs $593.99 vs $525 for the bundle), and the launch MSRP was $399 — the "discount" framing should be treated as marketing. The practical takeaway: street price for the 12K has hovered in a $350–$450 band since late 2025, and the 16K is currently the same $399 on the official store — so the 12K's main advantage over the 16K is build-volume size and a longer owner track record, not price (observed 2026-09-20).

4. What's included / what's needed

In the box (per 3djake.com unboxing review; consistent with Elegoo listings): printer, Wi-Fi antenna, print platform, resin tank, AI camera, 2 masks, 2 gloves, metal + plastic spatula, power cable, service card, USB stick (with test print files, ChituBox Basic + Pro, digital manual, sample 3D files), filter funnel, replacement screws, Allen keys, user guide. No resin in the box (standard).

Everything extra required to actually print (especially for a first-timer):

  • Resin — NOT included. Elegoo's own resins or any 405 nm UV resin; budget ~$30–60/L (bestchina3dprinters.com, Feb 2026 — stale-ish, re-verify). Elegoo sells a bundle adding 1 kg for $1 (see pricing).
  • Wash & cure station — effectively mandatory. Elegoo's compatible stations: Mercury XS Bundle (wash + cure in one, Tom's Hardware's pick at $115 during Nov 2025 sale — price stale), Mercury X, Mercury Plus 2.0 (reviewed at 3dprinteddecor.com). A wash station + UV cure box (or DIY bucket + UV lamp) is needed; prints come out dripping in uncured, skin-irritating resin.
  • Consumables/PPE: nitrile gloves, isopropyl alcohol (IPA) for washing (or water-washable resin), paper funnels/filters, paper towels, replacement PFA release film (the vat film is a wear item — Elegoo warranty explicitly excludes it), spare resin filters. Note: Elegoo does NOT include replacement FEP/PFA sheets in the box (per Tom's Hardware Saturn review — older model, but the current warranty page confirms film is an unwarranted consumable).
  • Workspace: a well-ventilated room (resin fumes); optional Elegoo Mars Mate air purifier (activated-carbon filter, referenced on the official product page). Printer footprint is ~33 × 33 cm plus the flip-up hood needs ~55 cm of height clearance.

5. Support reality

Warranty (Elegoo's own "Refund & Warranty" terms, fetched live from us.elegoo.com 2026-09-20):

  • Brand-new machines: 12 months (general parts).
  • LCD screen: 3 months only, excluding resin leakage, scratch-resistant-film damage, man-made damage, collision damage. (This matters — LCD failure is the most-reported owner problem; see below.)
  • Resin tank / build plate: 6 months (scratches/drops/man-made damage excluded).
  • Release film, acrylic cover, packaging, manual, tools, resin cartridge: no warranty (consumables).
  • Returns: 14 days. Non-quality returns: buyer pays all shipping; 5% restocking if unopened, 15% if open-box unused; used machines are NOT returnable. Quality-issue returns within warranty: Elegoo covers repair/return shipping.
  • Support channel: info@elegoo.com; Elegoo advertises "lifetime support."

Parts availability: Good as of mid-2026 — Elegoo US sells Saturn 4-family spare LCD screens ($114.99), metal resin tanks ($45.99), build plates ($50.00) ("For Saturn" collection, ~June 2026). Community consensus (3dprinteddecor.com comparison, Aug 2026) rates Elegoo's reliability/support reputation as stronger than Anycubic's in this class.

Community-reported problems (owners, not marketing):

  • LCD failures/dark spots — the #1 serious complaint. r/ElegooSaturn thread: "My Saturn 4U LCD died… half the screen is dead and the other half is scrambled." FB group (Sept 2026): a ~6-month-old Saturn 4 Ultra developed loose congealed resin + darker LCD spots on test exposure; owner suspects dying LCD. LCD has only a 3-month warranty.
  • Tempered-glass screen protector cracking during calibration — FB group (Sept 2026): Saturn 4 Ultra 16K owner broke the protective glass film twice while following the on-screen calibration wizard. Auto-leveling still pushes the plate hard against the screen.
  • 16K file-format/recognition bug — FB group (Sept 2026): brand-new Saturn 4 Ultra 16K refused to enable the "Print" button for any user-sliced file (both .goo and .ctb, sliced in Elegoo SatelLite and Lychee), despite firmware update and calibration; factory test file worked. Workaround unknown at time of posting.
  • Prints stick too hard to the laser-etched build plate — tweakreviews.com: prints were so firmly stuck that removal risked damaging prints/plate.
  • Build plate hard to clean — bars between plate and mount trap resin; "difficult to reach with your hand" (3djake.com); drip when removing the plate horizontally (Ultra's included drip tray/"bib" mitigates but doesn't eliminate it — gamingtrend.com).
  • Firmware/stuck boot screen — r/elegoo thread: Saturn 4 Ultra stuck at loading screen (owners suggest firmware reflash via USB).

6. Community verdict

Owners and reviewers rate the Saturn 4 Ultra as the value king of mid-size resin printers — Tom's Hardware called it its "best resin 3D printer choice for 2025," praising its 19-micron detail and print quality, and the 3dprinteddecor comparison (Aug 2026) judged it more reliable and better-supported than its main rival, the Anycubic Photon Mono M7 Pro. The recurring caveats from real users are the short 3-month LCD warranty paired with LCD degradation/failure reports after months of use, and mechanical nuisances (prints welded to the laser-etched plate, a hard-to-clean build plate, occasional firmware/file-format quirks) rather than bad print quality — print quality itself is essentially never the complaint.

7. Sources consulted

Official / manufacturer

Reviews / press

Facebook groups (via facebook-cli, account connected; skill /opt/hatch/skills/facebook-cli/SKILL.md read in full; references/groups.md consulted implicitly via command usage)

Reddit (supporting; direct page fetch of a thread failed — browser could not fetch reddit.com, so used search excerpts)

  • r/ElegooSaturn — "Saturn 4 LCD Problems": owner's Saturn 4 Ultra LCD died (half screen dead, half scrambled).
  • r/elegoo — "Saturn 4 Ultra Stuck at loading screen": boot-loop issue, firmware reflash suggested.
  • r/ElegooSaturn — "Ordered Saturn 4 Ultra what else do I need?": owner tips (vat holder, gravity-fed filter for cleaning solution).
  • r/resinprinting — Saturn 4 Ultra vs Anycubic Photon Mono M7 comparison thread (cited via 3dprinteddecor).

YouTube (supporting)

  • "Elegoo Saturn 4 Ultra 16K Review in 2026: The Detail MONSTER!" (2026 review short): https://www.youtube.com/shorts/znv8engblAk — 16K pixel size 14×19 μm, tank heater, tilt release, AI camera notes.
  • Older Saturn (2020) reviews surfaced in search (space.com, tomshardware.com Saturn reviews) but were excluded — they cover the original 4K Saturn, not the 4 Ultra.

Instagram (read /opt/hatch/skills/instagram/SKILL.md in full; the instagram-cli only covers the user's own account — no public/community search — so community/product photos were sourced via the image-search skill per its SKILL.md)

  • /opt/hatch/bin/image-search "Elegoo Saturn 4 Ultra resin 3D printer" and "…printed miniatures resin" — yielded the three verified product images below plus an Amazon product-photo URL (unused backup).

Images used (all verified 200 + image content-type via curl, downloaded and converted to JPEG 90%)

8. Substitutions / unverified

  • Substitutions: No model substitution (no Saturn 5 exists as a buyable product as of 2026-09-20). Image swaps: no image failed verification (all 4 candidates returned 200 + image/*; 3 used, 1 kept as backup).
  • Failed fetch: browser.open of a Reddit thread failed (browser-service could not fetch reddit.com). Compensated with Reddit search excerpts + deeper Facebook group digging (Sept 2026 owner posts). Flag: Reddit detail is thinner than planned.
  • UNVERIFIED / conflicts:
    • Elegoo's own displayed MSRP/compare-at for the 12K is inconsistent across pages ($524 vs $593.99 vs $525 bundle; launch MSRP was $399). Treat "was $X" claims as marketing; only the $399 launch price (3 sources) and current $399/$360/$353.99 listings are solid.
    • Current Amazon street price for the 12K: not captured in this pass (no reliable dated listing found) — re-verify live.
    • Mercury XS current price: last seen $115 (was $249) at Black Friday Nov 2025 (Tom's Hardware) — STALE; re-verify.
    • bestchina3dprinters.com's "regular $524 / sale $369" 12K pricing conflicts with Elegoo's pages; their Feb 2026 figures may be outdated or region-mismatched — flagged, not relied on.
    • 3dprintmentor.com's "Elegoo Saturn 5" article: treated as unreliable/SEO-hallucinated (specs are copy-pasted Saturn 4 Ultra 12K specs); NOT counted as evidence of a Saturn 5.
    • Resin running cost $30–60/L (bestchina3dprinters, Feb 2026) — plausible but single-source and 7 months old; re-verify.
    • Exact 16K XY pixel pitch: YouTube review says 14 × 19 μm (15120 × 6230); Elegoo press materials emphasize "16K" without pixel pitch in the sources I confirmed — treat the μm figure as reviewer-reported.
  • Correction note: none of my interim claims required retraction, but I initially entertained the 3dprintmentor "Saturn 5" mention before finding it contradicted by Fauxhammer's direct Elegoo interview and the absence of any product page — the file reflects the corrected conclusion.

Deepening pass (2026-09-20)

Social findings (second pass):

  • Facebook: one additional fresh data point from the Saturn support groups — a brand-new Saturn 4 Ultra 16K with a boot/LCD connection failure after fewer than eight prints, plus a separate report of slicer files failing to enable the Print button despite calibration, firmware updates, and the correct profile. Both sit in the "fixable but yours to fix" category with the earlier file-recognition bug, not as evidence of a systemic defect wave.
  • Review-circuit findings (observed 2026-09-20):
  • Threads: searches run via the Threads skill returned noisy, thin results for the Saturn 4 Ultra (deal reposts, generic resin content). No independent owner-verdict threads.
  • Instagram: two accounts were returned on connection — account selection ambiguous, so no Instagram research was performed and no owner content was attributed from it.
  • Aggregator caution: owner-sounding quotes on retail/aggregator pages (e.g. product pages republishing "Amazon review quotes") could not be verified as raw quotes; no raw-quotes file exists, so none are reproduced as verified quotes.

Price re-verification (2026-09-20):

  • 3dprinting.com's "Elegoo Day Sale 2026" roundup (published ~Sept 8, 2026, crawl <1 hour old at check): Saturn 4 Ultra 16K at $399; Saturn 4 Ultra 12K at $359 (was $339 at Black Friday 2025, so $20 more now). Notes that six machines in the roundup cost more than at Black Friday 2025, most by $14–$30 — the 12K among them.
  • End-to-end workflow math from the same roundup: Saturn 4 Ultra 16K at $399 + Mercury XS Bundle at $119 = $518 for a full wash-and-cure workflow, resin and film still to buy.
  • This confirms the 12K's $350–$450 band from the first pass and the 16K's $399 official price; it also confirms the first pass's note that Elegoo's compare-at "was" prices are marketing.

Comparisons (alternatives from this pass):

  • Anycubic Photon Mono M7 (~$493): faster on paper (150 mm/h high-speed resin) with 14K detail, but manual leveling, no heated vat, weaker community support reputation. The Saturn 4 Ultra 12K is the automation pick; the M7 is the speed-per-dollar pick.
  • Elegoo Mars 5 Ultra (~$259–$300): the compact sibling — same automation DNA (tilt-release, auto-leveling, camera), 9K/18 µm, much smaller volume. Buy the Saturn if the Mars's 165 mm Z ceiling doesn't fit your models.
  • Elegoo Saturn 4 (non-Ultra, ~$299): the non-automation mid-size — cheaper, but gives up tilt-release, auto-leveling, and the camera.

Wash/cure complaints: no new station-specific complaints surfaced in this pass beyond the first pass's framing (Mercury XS/X as the recommended pairing; ~$115–160 historical range; current bundle $119 per the Sept 2026 roundup).

Deepening pass 3 (2026-09-21)

Facebook status (2026-09-21): groups posts --query still [] (verified still-broken); groups search returns 0. Unfiltered groups posts works — browsed "ELEGOO Saturn 3D Resin Printer Un-Official Support Group" (id 3232300220153565, 8 recent posts): the pass-2 LCD-connection-error case still present (brand-new Saturn 4 Ultra 16K, "Status of LCD Connection error" after <8 prints, 11 comments — fixable-but-yours-to-fix); the rest of the browsed window is now hashtag-spam posts (#niedbalastudios) — evidence quality in that group is degrading.

Fresh failure-mode findings (observed 2026-09-21):

  • Aggregator-republished Amazon owner account, Aug 9 2026 (shopabunda Saturn 4 Ultra 12K page — aggregator-sourced, NOT a verified raw quote): 5-year 3D-printing veteran, Elegoo-only for 4 years, calls the 12K "the worst machine I have ever used": (1) noxious chemical-plastic smell out of the box from BOTH the original and replacement unit, lingering in the print room despite extra filtration; (2) auto-leveling failed weeks in ("auto leveling failed" error); (3) tank-clean feature lights the screen but traps no debris — failed prints must be drained/cleaned manually; (4) USB file-detection drops mid-print; (5) screen burned out with dead spots in one month; (6) subpar print quality. Severe negative account — contradicts the positive review circuit; treat as one owner's experience, not a measured failure rate.
  • 3dtechvalley 2026 updated review (https://www.3dtechvalley.com/elegoo-saturn-4-ultra-review/): 200+ prints / 300+ hours long-term section — no screen degradation, FEP lasts 30–40 prints, AI camera stays accurate, adhesion consistent without re-leveling. Minor issues: occasional AI false positives, temperamental Wi-Fi, heater overshoots target 1–2°C. Running-cost data: FEP replacement ~15 min, ~$10–15. (Note: its $549–599 price framing conflicts with Elegoo Day pricing — treat as stale.)
  • gagadget 16K review (Sept 2026; https://gagadget.com/en/725657-elegoo-saturn-4-ultra/): heater only reached ~25°C in a -3 to 4°C studio (30°C target assumes a warmer room); 150 mm/h is theoretical and the release time is preset in firmware — not tunable; no fume filtration (flagged by Goonhammer, GamesRadar+, 3DWithUs, Hackster too); 16K vs 12K panels indistinguishable at normal viewing distance (16K pays off on busts/display pieces, not tabletop armies); 16K build envelope slightly smaller than the 12K's. Tilt tank punishes overfilling and sloped benches (TechRadar on the 12K chassis); resin collects in the gap between plate and upper frame (Maker Hacks).
  • tweakreviews 12K (https://tweakreviews.com/printer/elegoo-saturn-4-ultra): misprints traced to the printer's profile defaulting to "fixed" instead of "normal" — owner fix: switch to "normal" in printer settings; Rapid Resin over-adhesion damaged figures during removal. 3h16m → 2h20m print-time gain from tilt-release confirmed.
  • makerhacks 12K (https://www.makerhacks.com/elegoo-saturn-4-ultra-12k-review/): AI camera "not useful" in the dark interior, detected none of the temperature-inflicted failures; owner's fan-heater workaround melted the Wi-Fi antenna; 6.3 GB internal storage noted; basic cheap ABS-like resin gave "very satisfactory" results.
  • Positive aggregator-republished accounts (shopabunda 16K page — aggregator-sourced, not verified raw quotes): Apr 2026 "Crushtest" (tilt release lets them drop to light supports, quiet, reliable); Mar 2026 "Angel" (out-of-box success, only complaint is resin pooling on the build plate).

Price re-verification (2026-09-21): 16K $399 / 12K $359 official during Elegoo Day 2026 (ends Sept 29) — re-verify post-sale.

Long-term ownership: 3dtechvalley's 200+ print / 300+ hour section is now the best longevity datum; the Aug 2026 1-star account's one-month screen burnout is the counterpoint (single account, not a rate).

Used-market: no used Saturn 4 Ultra listings surfaced; Marketplace keyword search unusable (substring-noise).

Source substitutions / gaps: Instagram (account ambiguity), Threads (thin) — same as pass 2. New evidence is review-circuit + Facebook group browsing + aggregator-republished owner accounts (explicitly labeled as aggregator-sourced). No raw-quotes file exists; no quotes invented.

An Elegoo Saturn 4 Ultra resin printer.
An Elegoo Saturn 4 Ultra resin printer.
elegoo saturn 4 ultra — photo 02
elegoo saturn 4 ultra — photo 03
elegoo saturn 4 ultra extra — photo 01
elegoo saturn 4 ultra extra — photo 02
elegoo saturn 4 ultra extra — photo 03

Sources