Review of Eligo Saturn 4 Ultra 16K Printer

Feb 24, 2025

Overview of Eligo Saturn 4 Ultra 16K Printer

Introduction

  • Speaker: CJ from Elevated Systems
  • Focus: Review of the Eligo Saturn 4 Ultra 16K printer
  • Discussion topics:
    • Impressive upgrades vs. issues faced
    • The representation of pre-release reviews

Key Features of Saturn 4 Ultra 16K

  • Upgrades from Saturn 4 Ultra 12K:
    • Improved screen resolution (16K vs. 12K)
    • Addition of plastic wings to build plate for easier handling
    • Internal lighting for better webcam functionality
    • Built-in Vat Heater:
      • Maintains resin temperature at 30°C
      • Preheat function available
      • Effective in cold environments (e.g., unheated garages)

Print Quality Observations

  • Resolution Details:
    • 16K resolution: 15,120 x 6,232 pixels; pixel size: 14 x 9 microns
    • Comparison with 12K screen (19 x 24 microns)
    • Market limitations:
      • No consumer resins can fully utilize 14 x 9 micron detail
      • Mention of different resins available but limitations noted
  • Screen Performance:
    • Higher pixel density results in reduced light transmission (up to 36% less light)
    • Print quality comparison with Mars 5 Ultra (9K screen)
  • Print Speed:
    • Mars 5 Ultra: 1.5s exposure time
    • Saturn 4: 2.2s exposure time
    • Light concentration issues with larger screen

Issues Encountered During Testing

  • Initial Setup Problems:
    • Auto-leveling issues; manual leveling needed
    • Adhesion problems on specific areas of build plate
  • Build Plate Concerns:
    • Potential warping or machining tolerances issues
  • Calibration Issues:
    • Difficulty achieving accurate exposure times
    • Problems with printing thin validation models
  • Software and Functional Problems:
    • Touchscreen glitches and printer freezing mid-print
    • Vat debris sensor failures

Manufacturer's Response and Observations

  • Eligo's reputation in the resin printer space
  • Competitiveness in the market:
    • Did Eligo rush to release to compete with other brands?
  • Reviewer Experiences:
    • Other reviewers reported minor issues, not major flaws
    • Consensus on need for manufacturers to prioritize engineering over marketing

Final Thoughts

  • Concerns exist regarding the Saturn 4 Ultra 16K's readiness for market
  • Author's decision to avoid pre-release products in future reviews
  • Emphasis on the importance of polished and functional products for consumer trust

Full transcript