ELEGOO Mars 5 Resin 3D Printer: features, specs and who it suits

The ELEGOO Mars 5 is a desktop resin 3D printer that builds small, detailed objects layer by layer from liquid photopolymer resin. It suits miniatures, prototypes and other fine parts. Here is what its specs mean and what resin printing involves.

How MSLA printing works

MSLA stands for masked stereolithography. A light source shines through an LCD screen that acts as a mask, showing the shape of each layer, and cures a thin sheet of resin at once. Because a whole layer is exposed together, print time depends on the number of layers rather than how much is on the plate. Compared with filament printers, resin printers typically capture finer detail and smoother surfaces, but need more cleaning and handling.

The 6.6-inch mono 4K screen

ELEGOO lists a 6.6-inch monochrome LCD with a resolution of 4098 x 2560 pixels and 35 x 35 µm XY resolution. A monochrome screen lets more light through than a colour one, which typically allows shorter exposure times and gives the screen a longer working life. The brand quotes print speeds of up to 70 mm/h and uses FEP release film.

Build volume

The printing size is 143.43 x 89.6 x 150 mm. That is enough for figurines, jewellery patterns, dental-style models and engineering parts that fit the volume, but not large single pieces.

COB light source and cooling

ELEGOO lists a COB (chip on board) light source with 92% light uniformity. Even light across the screen matters because uneven exposure can cause variation in cure and surface finish. Large cooling fans and copper tubes handle heat, which ELEGOO says extends the printer's lifespan.

Automatic levelling and sensing

Levelling the plate is a common hurdle with resin printers. ELEGOO says the Mars 5 uses a built-in sensor and spring so that you can unpack, power on and start printing. The build plate is laser-engraved to improve adhesion. A mechanical sensor is listed as detecting low resin, foreign objects, release film replacement needs and overheating, with a self-check function.

Everyday design

The listing mentions adjustable foot pads, one-touch plate locking, a replaceable tank lock, dual pouring spouts, a resistive touch screen and a vertical interface. The printer is about 21.0 x 11.7 x 13.3 inches (53 x 30 x 34 cm) as listed.

Printing tips from ELEGOO

ELEGOO suggests checking machine settings before printing, adding supports properly in slicing software, and cleaning the resin tank promptly after printing, to protect the screen and release film.

Who it suits

It suits hobbyists making miniatures and models, designers testing small prototypes, and makers who value detail over size. It is less suited to large parts or to people who don't want to handle resin and clean-up.

What to check before you buy

• Ventilation and space: resin has a strong smell, so plan a ventilated area.
• Protective gear: uncured resin is typically handled with nitrile gloves and eye protection. Follow the resin maker's safety data sheet.
• Post-processing: you will need isopropyl alcohol or a suitable wash and a UV curing method.
• Resin: check which resins are compatible with the printer's wavelength.
• Software: you'll need slicing software and supports for most models.
• Consumables: release film and the screen eventually wear out, so see how replacements are supplied.

The short version

• A compact MSLA resin printer with a 6.6-inch mono 4K screen.
• Build volume of 143.43 x 89.6 x 150 mm, with 35 µm XY resolution.
• COB light source (92% uniformity) and copper-tube cooling.
• Automatic levelling and a mechanical sensor for resin and film checks.
• Needs ventilation, wash and cure steps, and protective gear.

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