CO2 Laser Machines

CO2 lasers (sealed glass tube or RF metal tube, ~10.6 µm wavelength) are the workhorse for cutting wood, acrylic, paper, leather, fabric, and engraving glass and stone. Almost everything from the cheap K40 up to multi-kW industrial flatbeds is the same physics, just bigger tubes and stiffer frames. For controllers see Laser Firmware & Controllers; for software see Laser Design & Sender Software.

Entry-level: K40 and clones

• ★ K40 (generic 40 W Chinese desktop) — ~$400–$600 on AliExpress / Amazon. 40 W glass tube (real ~30 W), 300×200 mm bed, M2Nano stock board. Universally hackable; the gateway drug to CO2. Plan to spend another $200 on air assist + exhaust + bed + brain transplant.
• K40 upgrades — see Laser Firmware & Controllers: MKS DLC32 + FluidNC, Cohesion3D, Mini-Gerbil, Awesome.tech. With LightBurn + a real bed + exhaust, a hopped-up K40 is genuinely usable.

Mid-range desktop CO2 (50–80 W)

• ★ OMTech Polar / Polar+ / 60 W desktop — closed-stack, 50–80 W CO2 in compact desktops; Ruida controller; LightBurn DSP works out of the box. The 2026 default for "real CO2 without a workshop."
• OMTech AF2028 / 70 W / ZF2028 — bigger workspace, autofocus, pass-through. The OMTech mid-tier sweet spot.
• Aeon Mira 5 / Mira 7 / Nova series — Ruida-controller CO2 from a pricier vendor; build quality and warranty better than OMTech; ~2× the price.
• Boss LS-1416 / LS-1420 / LS-2440 — US-supported CO2; Ruida + RDWorks/LightBurn DSP; good US service network.
• Thunder Laser Nova 24 / Aurora / Bolt — premium Chinese-made cutters with US/EU support; Ruida controller, ~2–3× OMTech price. Beloved for build quality. Bolt is their fast hybrid CO2 + galvo.

Consumer "appliance" CO2 (closed ecosystems)

• Glowforge Aura / Plus / Pro / Spark — closed cloud-tethered CO2 (Aura is diode despite the brand). Wi-Fi + camera + autofocus + cloud workflow. Premium subscription unlocks fonts/library. Not hackable, no LightBurn, no offline mode. Pay for the convenience.
• xTool P2 / P2S — 55 W CO2 desktop; autofocus, dual cameras, conveyor, auto-passthrough. Hybrid-friendly: speaks XCS + LightBurn (with a Pi bridge).
• OneLaser XRF / Hydra 7 — newer mid-tier; OneLaser's stack is more open than Glowforge but more curated than OMTech. Hydra 7 is hybrid CO2 + diode in one box.
• Flux Beamo / Beambox / Beambox Pro / HEXA — small enclosed CO2; runs Beam Studio (vendor) or LightBurn.
• Mr. Beam II Dreamcut (German) — small enclosed CO2; vendor stack.

Industrial / pro flatbed CO2 (80–150 W and up)

• Trotec Speedy 100 / 300 / 400 — the European industrial standard; closed-stack JobControl software; expensive but bulletproof.
• Epilog Fusion / Helix / Pro — US industrial standard; closed stack.
• Universal Laser Systems (ULS) ILS / VLS — industrial; modular, RF-tube.
• GCC LaserPro Spirit / Mercury — industrial Asian alt.
• Thunder Laser Nova 51 / 63 / Bolt Pro — high-end Chinese, increasingly chosen over Trotec by small shops on a budget.
• Aeon Mira 9 / Nova 14 / 16 — pro-grade Chinese flatbed.

Tube types: glass vs. RF

• Glass DC tubes (CDWG, RECI, SPT, Yongli, EFR) — cheap, replaceable (~$200–$1,200), lifespan 8,000–10,000 hr. Slower modulation (no high-quality engraving fidelity), bigger spot. The default in everything below industrial.
• RF metal tubes (Coherent / Synrad / Iradion) — more expensive (~$3,000–$8,000), lifespan 30,000+ hr, much faster pulsing → cleaner engraves, smaller spot. Standard in Trotec / Epilog / pro Glowforge tier.

Cutter capability rough guide

• 40 W (real ~30 W): 6 mm acrylic (slow, ugly edge), 6 mm basswood, easy fabric/leather/paper.
• 60 W: 8 mm acrylic clean, 8–10 mm wood reliably.
• 80–100 W: 10–12 mm acrylic clean, 12–18 mm wood at slow speeds.
• 130–150 W: 18–25 mm acrylic, 20+ mm wood. Requires water chiller + serious exhaust.
• >150 W: industrial; outside hobby scope.

Adjacent / required gear

• Water chiller (CW-3000 / CW-5200) — required on glass-tube CO2 above ~40 W. CW-5200 (active refrigerant) is the de-facto pick over 60 W.
• Air assist pump — 30–60 L/min for diode/small CO2; 80–100+ L/min for cutting. (See Laser Air Assist & Fume Extraction.)
• Lens / mirror set — see Laser Maintenance & Alignment.

Pick this if…

• Cheapest entry to real CO2: K40 + Mini-Gerbil/DLC32 brain transplant + LightBurn.
• Default "I have a workshop, want CO2": OMTech Polar or 70 W AF2028.
• Set-and-forget, OK with cloud + closed: Glowforge Pro.
• Open-ish modern mid-tier: xTool P2 or OneLaser XRF.
• Small business cutting daily, need warranty: Thunder Laser Nova or Aeon Mira.
• Production / decade-long lifespan: Trotec Speedy or Epilog Fusion.