Elegoo Mars 4 Max

The Elegoo Mars 4 Max is the biggest machine in the Mars 4 family: a 9.1-inch LCD against the 6.6–7-inch panels on its siblings. It shipped in 2023 and is now discontinued, and people bought it for plate area rather than fine detail — the pixel here is 34 μm, nearly twice as coarse as on 9K models like the Mars 4 Ultra.

Build volume is 195.84 × 122.4 × 150 mm on a 9.1-inch mono LCD running 5760 × 3600 (marketed as 6K), with 0.01–0.2 mm layers and up to 70 mm/h at 1.5–3 s exposure per layer. The light source is a 405 nm COB LED behind a refractive lens, with 9H tempered glass on top of the panel. Cooling is two fans, one in and one out. Leveling is manual and the only connection is a USB stick — no Wi-Fi, no camera. It weighs 6.8 kg and draws 72 W.

Pros

• The 196 × 122 mm plate holds roughly twice as many 32 mm miniatures as a 6.6-inch Mars, and busts up to 150 mm tall print in one piece
• 6K at 1.5–3 s per layer: the rated 70 mm/h comes without pushing exposure or risky lift settings
• 9H tempered glass over the LCD means a resin spill wipes off the glass instead of killing the panel
• The laser-engraved build plate grips prints noticeably better than a smooth one, so fewer models tear off early in a run
• Open GOO file format plus three slicers to choose from: Elegoo SatelLite, ChiTuBox and Voxeldance Tango
• A USB-powered carbon-filter air purifier is in the box, and it takes a real bite out of the resin smell

Cons

• The sealing tape around the LCD peels within the first week of printing — that is the headline complaint from owners on 3DJake, and resin can then work its way under the panel
• The fans are loud, and owner reviews report them starting to whine within the first few months
• Some units arrive with a dead USB port, and there is no other way to get a sliced file into the printer
• A 34 μm pixel shows on faces and fine miniature texture next to 9K machines, and manual leveling has to be redone after every move

The Mars 4 Max earns its place where volume matters: miniatures in batches, large busts, models and enclosure parts up to 150 mm tall. With the model discontinued, a new purchase points to the Elegoo Mars 5 Ultra (18 μm pixel, tilting vat, 150 mm/h) or the Elegoo Saturn 4 if plate area still beats resolution for you.

Bottom line: a cheap way to get a large print area in a desktop Mars body, paid for with a coarse pixel, manual setup and real question marks over build quality.

Reviews

• FauxHammer — Elegoo Mars 4 Max Review: The New BEST BEGINNER PRINTER
• 3DJake — owner reviews of the Mars 4 Max: peeling LCD seal, loud fans, faulty USB port