Diode Laser Machines

Diode lasers are the cheapest entry point to laser engraving and light cutting (basswood, leather, anodized aluminum marking). The 2026 hobby market is dominated by 5–40 W "optical" output modules from a handful of Shenzhen vendors with overlapping designs. Almost all run GRBL on a custom board; almost all work with LightBurn or LaserGRBL. For frame retrofits see Laser Firmware & Controllers.

A note on power numbers

"40 W diode laser" is marketing shorthand for ~10 W optical output (the rest is electrical heat). Always look at the optical-power figure (sometimes called "laser power" vs. "input power"). Real cut depth on basswood scales with optical power, not the marketing number.

The big diode brands

• ★ xTool (D1 Pro, D1, M1, S1, F1, F2 Ultra, P2 — though P2 is CO2) — closed-source vendor stack; 5 W / 10 W / 20 W / 40 W (optical equivalents 2–22 W). The most-shipped diode brand in 2025–2026. Ships with xTool Creative Space (XCS); LightBurn-compatible. The S1 enclosed diode is the de-facto "consumer pick."
• ★ Ortur (Laser Master 3, LM3 LE, LM3 LE-22W, Aufero series) — Hong Kong-based; 5–22 W optical. Open-friendly (GRBL stock), cheap, the FOSS-leaning "second pick" after xTool. LaserGRBL-friendly.
• Atomstack (X20 Pro, A20, S20, X40, MAXIMO X40) — value diode brand; high-power claims, mixed quality. GRBL stock, LightBurn / LaserGRBL friendly.
• Sculpfun (S30 Pro, SF-A9, SF-A12, iCube) — value brand with a strong YouTube presence; honest power numbers; air-assist included on most Pro models.
• NEJE (Master 2S Plus, Max 4) — older hobbyist brand; very tunable; popular among modders.
• Two Trees (TS2, TTS-55, TS35) — value diode + frame brand; good frames, mixed lasers.
• Sovol SL01 / Creality Falcon / Falcon2 / Falcon Pro 22W / Falcon Pro 40W — 3D-printer brands' diode crossovers. Closed-stack; LightBurn-compatible.
• Endurance Lasers — US/Russian high-quality module supplier; sells diode modules (10 W / 20 W / 40 W optical) you bolt onto an existing CNC frame or 3D printer. The "premium module" choice.

Enclosed consumer diodes (the new category)

• ★ xTool S1 — closed enclosed 20 W / 40 W diode; auto-passthrough, conveyor, autofocus. The default "I want a Glowforge but diode" pick.
• OneLaser X1 / Hydra 7 — newer entrant (Hydra 7 is hybrid CO2+diode); LightBurn-supported.
• Creality Falcon A1 Pro — enclosed diode + camera + air assist, mid-2025.
• Atomstack X70 Max / Hurricane — enclosed 70 W / 130 W "diode" claims (multi-diode-source); marketing power inflation is severe — verify the optical wattage.

DIY frames you bolt a diode to

• OpenBuilds LEAD CNC + diode module — the classic "real CNC plus an Endurance / NEJE diode" build. Gantry CNC frame with a swappable spindle/laser mount.
• MPCNC / LowRider (V1 Engineering, GPL) — open-source 3D-printed CNC frame; takes a small diode for engraving.
• 3D printers as lasers — bolt a diode to an Ender 3 or Voron 0; works in a pinch. Rough Z control unless you autofocus.

Snapmaker / hybrid

• Snapmaker 2.0 / Artisan / J1 + laser module — closed-stack 3-in-1 (printer/CNC/laser) machines; runs Marlin laser mode, drives via Snapmaker Luban or LightBurn (with hacks). Convenient, less powerful than a dedicated diode.

Power-class shorthand

• 2–5 W optical: plywood scoring, leather, anodized marking, pcb resist exposure. ~$150–$300.
• 10 W optical: light cut on 3 mm basswood / 6 mm with multi-pass. ~$300–$600.
• 20 W optical: clean cut on 6 mm basswood, slower acrylic. ~$600–$1,200.
• 40 W "optical" (combined diodes): approaching low-end CO2 territory for cut depth on wood; will not cut clear acrylic (wavelength). ~$1,200–$2,500.

What diodes can NOT do

• Clear acrylic: diodes (~450 nm) pass through clear acrylic. Use CO2 or paint the back side of the acrylic first.
• Bare metal: diodes mark anodized / coated metal but do not cut or deeply engrave bare metal. Need a fiber laser.
• Glass: poor; tape-and-paint or use CO2.
• Thick (>10 mm) wood: painful even at 40 W; CO2 territory.

Pick this if…

• Default consumer pick, enclosed, "just works": xTool S1.
• Open-platform, value, FOSS-friendly: Ortur LM3.
• Maximum hackability + premium module: OpenBuilds LEAD CNC + Endurance module.
• You also want to 3D print and CNC: Snapmaker 2.0 / Artisan.
• Cheapest viable engraver: Sculpfun SF-A9 or Atomstack A20.
• Cutting bare metal or thick acrylic: stop and look at CO2 or fiber.