ACMER S1 Laser Engraver and Cutter (S1-3.5W): features, specs and who it suits

The ACMER S1 (model S1-3.5W) is a compact desktop laser for engraving designs and cutting thin materials. ACMER says it arrives 99% preassembled, with about a minute needed to fit the laser head. It is made for crafts, art projects and small-scale making at home, and is light enough to carry between rooms.

How the laser is specified

ACMER lists a 3,500 mW (3.5 W) diode laser with a 455 ±5 nm wavelength and a 2 mm focal length. It gives the machine output as 36 W. That is the overall power of the machine, and the 3.5 W figure is the laser's optical output. The optical figure is the one that governs how thick or dense a material the laser can work on. As a general rule, diode lasers in this class mark and cut thin materials well, and need several passes for anything thicker.

Speed and accuracy

The brand rates the engraving speed at up to 10,000 mm/min, with repeat positioning accuracy of 0.01 mm. Repeat accuracy shows how closely the head returns to the same position, which matters when you layer passes or line up a design on an object. Actual finish depends on the material, focus and software settings.

What it works on

According to ACMER, the S1 engraves wood, bamboo, leather, plastic, PCB, aluminium oxide and ceramics, and cuts thin plywood, MDF and acrylic. Blue lasers in general work best with dark or opaque materials, and clear acrylic usually lets the beam pass through. Treat the listing's material list as a starting point and check the manual and test on scrap first.

Build, size and portability

• Industrial-grade aluminium alloy frame
• Machine size: 250 x 250 x 162 mm (about 10 x 10 x 6.4 inches)
• Working area: 130 x 130 mm
• Weight: about 2 kg; the listing gives 4.2 lb for the item

The compact working area suits coasters, tags, small signs, cards and engraved gifts. It won't take large boards.

Software and files

ACMER says the S1 runs with macOS, Windows and Linux, and supports LightBurn and LaserGRBL. It reads NC, DXF, BMP, JPG and PNG files. The brand adds that its multi-core processor can control multiple units. LightBurn is a separate programme, so check its licensing and device support before you plan around it.

Safety, warranty and support

ACMER lists Class 4 laser certification and IEC 60825-1 compliance, a 12-month warranty and 24/7 support. Class 4 is the highest laser classification, so use the machine carefully. Follow the manual, wear laser safety eyewear matched to the wavelength, ventilate the room, keep flammable items away and don't leave a job running unattended.

Who it suits

It suits beginners and hobbyists who want a small first laser, crafters who make personalised items, and small sellers making short runs. It's less suited to people who need a big bed or to cut thick or reflective materials.

What to check before you buy

• Project size: confirm the 130 x 130 mm area covers what you'll make.
• Materials: check your chosen materials suit a 3.5 W diode laser.
• Workspace: plan for ventilation, a heat-safe surface and enclosed storage.
• Eye protection: buy proper glasses for 455 nm light.
• Computer: check your operating system and software choice.
• Regulations: find out whether any local rules apply to lasers.

The short version

• A compact, 99% preassembled 3,500 mW diode laser engraver and cutter.
• 130 x 130 mm working area; about 2 kg.
• Supports LightBurn and LaserGRBL on macOS, Windows and Linux.
• Suited to thin, opaque materials and small projects.
• Follow the manual and use suitable eye protection.

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