Acmer P3 Review: 2W IR + 10W Diode 2-in-1 — The Enclosed Dual Laser for Metal and Wood

The World's First Enclosed CoreXY Dual Laser Engraver

When Acmer introduced the P3, it brought together two firsts: the first enclosed laser engraver built on a CoreXY motion system, and one of the first to integrate both diode and IR lasers into a single unified module with a physical toggle switch. Both of those choices were deliberate. The CoreXY structure gives the P3 its speed advantage — 800mm/s maximum, with 2,000mm/s² acceleration that most gantry laser machines cannot approach. The integrated dual-laser module eliminates the module-swap interruption that most two-laser setups require.

The all-metal aluminum frame sits under a high-clarity acrylic lid. The 500-megapixel built-in camera captures the entire 400×400mm work area through the lid, letting you drag and position designs directly onto your material preview in LightBurn or the Acmer app — without opening the enclosure or manually measuring material placement. It's a desktop machine rather than a portable one — but its 400×390mm internal workspace punches well above its compact external dimensions.

CoreXY Motion — First in Class

Standard gantry lasers move the X-rail along Y and the head along X independently. CoreXY drives both axes simultaneously with two motors and dual belts — the same system used in fast FDM 3D printers. This reduces the moving mass significantly, enabling 800mm/s speed and 2,000mm/s² acceleration without sacrificing the 0.01mm positioning accuracy needed for detailed engraving.

Physical Toggle Switch — Instant Laser Swap

Both lasers live in one integrated module head. A small physical toggle on the side of the head selects between the 10W diode (blue LED indicator) and 2W IR (red LED indicator) — no module removal, no power-off/restart, no tool needed. Update your software settings and you're working with the other laser in seconds. A small but significant workflow advantage over module-swap machines.

Built-in Camera — Full Area Coverage

The camera sits in the acrylic lid and captures the full 400×400mm work area through 5 layers of high-resolution optical glass. In LightBurn, this camera view lets you drag designs precisely onto your material without opening the lid — and monitor the job progress in real time from the software interface. Critical for multi-piece batch layouts where precise positioning saves material.

Air Assist Included —  Pump

Air assist blows a directed jet of air at the laser focal point during cutting, removing combustion byproducts and suppressing flame — particularly critical for clean-edge wood and acrylic cuts. Most machines at this price sell air assist as an optional add-on. The P3 includes the pump in the basic package.

Micro-Airflow Lens Protection Mode

A dedicated low-pressure airflow mode generates gentle air movement to prevent smoke backflow onto the laser lens — extending lens life by approximately 20% per Acmer's figures. A practical feature that reduces maintenance frequency on what would otherwise be a consumable item requiring regular cleaning.

Conveyor Extension to 4,000mm

The optional auto conveyor extends the P3's engraving length from 390mm to a maximum of 4,000mm — enabling continuous batch engraving on long stock, sequential production runs, or extra-long single-piece work. Available as a bundle upgrade from Laserbuying.

One Head, Two Lasers — Why the Toggle Switch Matters

The P3's 2-in-1 module is a genuine engineering achievement in this price bracket. Both lasers — the 10W diode and 2W IR — are co-housed in a single compact laser head that mounts and unmounts from the CoreXY carriage like a single module. The two are optically separate (different wavelengths, different focal characteristics, different material absorption profiles), but physically integrated.

The physical toggle switch on the side of the head is a small but important design decision. On most competitor dual-laser setups at this price point, switching lasers requires physically removing one module and installing another — which typically means powering down the machine, unlocking the module, swapping it, re-locking it, and restarting. On the P3, flipping the toggle and updating your software settings takes about 15 seconds.

The P3's IR laser is a short-focus design — producing a 0.02×0.02mm beam spot — rather than the long-focus design used in many budget IR modules. This shorter focal length creates finer, more precise marks on metal surfaces. Acmer's own A2 IR module (used in the older P1/P2 machines) is a long-focus design; the P3-specific 2W IR module is explicitly more precise, per Acmer's own FAQ.

2W IR Performance — Metal, Plastics, and Dark Acrylic

The P3's 2W IR laser at 1064nm handles all common bare metals — stainless steel, aluminum, brass, gold, silver, titanium, copper, platinum — with clean, permanent marks. The 0.02×0.02mm beam spot creates fine detail engraving on metal surfaces including micro-text on jewelry, logo work on metal business cards, and precision marks on industrial parts.

On dark plastics and non-transparent acrylic, the IR laser produces a neat marking effect without melting or deforming the material — the 1064nm wavelength interacts with the polymer differently from a diode, creating a contrast change rather than a thermal burn. This is particularly useful for ABS, PC, and engineering plastics where diode lasers struggle to produce clean marks.

It's worth being clear about what the 2W IR can and cannot do: it surface-marks metals with excellent precision and is ideal for logos, text, serial numbers, and decorative engraving. At 2W, it cannot deep engrave or cut metals — that requires the 20W fiber or 60W MOPA class of machines. For surface marking applications, 2W at 0.02mm spot size produces results comparable to much more expensive machines.

10W Diode — Wood, Leather, and All Organics at 800mm/s

The 10W diode module handles the full range of organic and non-metallic materials: wood cutting and engraving, leather, MDF, bamboo, fabric, dark acrylic, glass surface, slate, ceramic, jade, marble, and paper. With air assist from the included 30L/min pump, wood cut edges are clean with minimal charring — the airflow removes combustion products from the cut zone continuously during operation.

At 800mm/s with 2,000mm/s² acceleration, the P3's CoreXY system makes its real advantage visible on large fill engravings. A design that takes 12–15 minutes on a standard gantry machine at 200–400mm/s covers the same area in 3–4 minutes on the P3, maintaining the same 0.01mm positioning accuracy throughout. For Etsy sellers and small businesses processing dozens of pieces per session, this throughput difference translates directly to production capacity.

One practical note from TechRadar's hands-on review: LightBurn provides the most reliable results, and Wi-Fi connectivity on the P3 is app-only — for LightBurn or LaserGRBL connections, use USB or TF card for the most stable operation.

Large Area + Camera = Efficient Batch Production

The 400×390mm work area combined with the full-coverage 5MP camera creates a genuinely efficient batch production workflow. In LightBurn, you open the camera view, place multiple items across the work surface, drag your designs precisely onto each item in the live preview, and run the job — all without opening the enclosure or manually measuring positions. Camera positioning accuracy is within 2mm across the full 400×400mm field.

For an Etsy seller making wood coasters, keychains, or personalized gifts, fitting 12–15 small items into one P3 session vs 1–2 items per session on a galvo machine with a 115×115mm field changes the economics of production significantly. The optional auto conveyor extends this further to 4,000mm of continuous feed — enabling sequential batch runs on long stock without manual repositioning.

The P3's slide-out tray design (noted in user reviews) makes loading and unloading the work area clean and fast — a practical detail that matters when you're cycling through multiple batches in a production session.

Etsy Sellers & Gift Makers

400×390mm work area means 10–15 items per session. Camera-assisted batch layout in LightBurn saves setup time. Both wood and metal product types handled by one machine.

Jewelry & Metal Engravers

2W IR at 0.02×0.02mm spot marks stainless steel, gold, silver, brass, and titanium with fine detail — no spray required. Toggle to diode for leather findings and wood backing pieces in the same session.

Home Studio & Beginners

Class I enclosed, 8 active safety systems, arrives nearly ready to use. Acmer app provides a guided workflow for beginners. Air assist, honeycomb bed, and materials kit included — nothing to buy separately to get started.

Small Workshop Production

CoreXY 800mm/s speed + large area = high per-session output on mixed wood/metal product lines. Optional conveyor extends to 4,000mm for continuous batch runs.

Upgraders from Open-Frame Machines

If you're on an open-frame diode engraver and want an enclosed machine with metal engraving capability, larger work area, and production-grade throughput — the P3 is the natural next step without breaking the bank.

Industrial Parts Marking

Permanent IR marking on stainless steel, aluminum, and plastics for serial numbers, QR codes, and compliance labels. The large area fits fixtures with multiple parts per run.

✔ Pros

• 400×390mm work area — largest in this price/laser class
• Physical toggle switch — laser change in 15 seconds
• CoreXY 800mm/s — fastest gantry at this price
• 2W IR short-focus 0.02mm spot — more precise than long-focus IR
• Built-in camera with full area coverage
• Air assist included — no add-on purchase needed
• Class I safety with 8 active safety systems
• LightBurn + LaserGRBL + Acmer App · 300+ materials · From $949

✖ Cons

• 2W IR = surface marking only — no deep metal engraving or cutting
• 800mm/s gantry speed slower than galvo machines (4,000–10,000mm/s)
• Desktop only, not portable
  

✓ Buy the P3 if you…

• ✓Need metal surface marking AND wood cutting in one machine
• ✓Want the largest work area under $1,000
• ✓Do batch production of small items on a desktop machine
• ✓Want Class I enclosed safety without a premium budget
• ✓Use LightBurn and want full compatibility
• ✓Are transitioning from an open-frame machine to an enclosed setup

› Consider alternatives if you…

• ›Need to deep engrave or cut metals (→ fiber/MOPA machine)
• ›Need portability for craft fairs (→ xTool F1 at 4.6kg)
• ›Primarily do small-item metal engraving at high volume (→ galvo machine)
• ›Need color MOPA engraving (→ xTool F2 Ultra or Creality Falcon T1)
• ›Only do wood/organics — no metal (→ lower-cost diode-only machine)