The Glowforge Aura craft laser™ cutting machine comes with a 20-watt CO2 laser—and after three years and 200+ rush orders in my shop, I can tell you that number is a feature, not a limitation. It cuts 3–6mm wood, 3mm acrylic, leather, and EVA foam cleanly. It engraves anodized aluminum, glass, and stone. It will not cut metal sheets or thick steel. If you're evaluating the Glowforge Aura laser wattage and wondering whether it's "enough," the answer depends on what you're making—but for the jobs that actually pay the bills in a small shop, 20 watts is in the sweet spot.
In my role running a small fabrication studio, I've handled 200+ rush orders over three years—including same-day turnarounds for event clients who discovered, 36 hours before a launch, that a supplier's order wouldn't arrive on time. When I'm triaging a rush order, the first thing I check isn't wattage. It's the material, the finish, and whether I can verify laser settings before promising a deadline. In March 2024, a client needed 40 engraved acrylic awards for a corporate ceremony with 48 hours' notice. Outsourcing quoted five to seven business days. The Aura, plus a seven-minute test cut on scrap, let me deliver on schedule. That client has referred three companies to us since.
What 20 Watts in a CO2 Laser Actually Means
The wattage question—"how many watts is the Glowforge Aura?"—comes up in nearly every consultation I take. The spec sheet says 20 watts, but the number only makes sense when you compare it correctly. The Aura uses a CO2 laser tube, which produces a 10.6-micrometer wavelength that wood, acrylic, leather, and foam absorb readily. This is fundamentally different from diode lasers, which output a shorter wavelength that passes right through clear acrylic and struggles with light woods. A 20W CO2 laser will out-cut a 20W diode laser on most materials—sometimes by 2–3x in practical speed and edge quality. It's also different from a 100W CO2 tube in an industrial machine—obviously. But the Aura was designed around the idea that the right tool for small parts is a small tool. Per Glowforge's product page (glowforge.com), the Aura's 20W CO2 tube and autofocus system are the headline specs—always verify current details there before buying. In my experience, the machine handles the following in normal operation:
- 3mm Baltic birch plywood: clean single pass
- 6mm basswood: two passes, no charring
- 3mm cast acrylic: one pass, polished edge
- EVA foam: clean cut at 30–35% power and high speed
- Anodized aluminum: crisp engraving at low power
That last bullet surprises nearly everyone. How does a 20W laser mark metal? It doesn't engrave the metal itself—it vaporizes the thin coating layer on anodized aluminum, leaving a high-contrast mark. The Aura won't cut steel sheet, and no sub-$5,000 CO2 laser will either. That's fiber laser territory.
One number I'd correct from my own earlier assumption: I used to think higher wattage was always better, especially after comparing the Aura with a 40W machine. But 90% of my orders use material under 6mm thick, so the extra cutting depth would sit unused. The Aura's autofocus and cloud workflow save me more time per job than a bigger tube ever would.
Foam Laser Cutting on the Aura
If you came here searching for a "foam laser cutter," the Aura qualifies—with one important caveat. EVA foam (the material used for cosplay armor, padding, and custom inserts) cuts and engraves beautifully. The catch is that foam is heat-sensitive. If you run it like wood, the edges melt, bubble, and re-seal behind the beam. Low power, high speed, and decent air assist are non-negotiable.
In April 2024, a client messaged me in a panic: their EVA foam armor pieces needed resizing three days before a convention. I brought them in, spent ten minutes testing scrap pieces, and ran the full set within two hours. I could do that confidently because I'd learned the testing routine the hard way—after a scorched-edge disaster on an earlier project. The procedure now reads: test on scrap first, set power to ~35%, speed to maximum, air assist on, then run. It saves me a redo almost every time.
CNC and Laser Cutting: Two Tools, Different Jobs
The search phrase "CNC and laser cutting" gets grouped together, and the confusion is understandable. Both produce 2D parts from sheet material. But they work in completely different ways. A CNC router physically grinds material away with a spinning bit. It can handle thick wood, aluminum, and plastics—but it's loud, dusty, and needs proper fixturing and tool changes. A laser vaporizes material along a cut line. It produces clean edges on wood and acrylic, never touches the material physically, and is quiet enough to run next to a desk. The limitations: lasers only work with materials that absorb their wavelength, and they can't cut thick or reflective metal.
In my shop, I don't see the Aura as a replacement for a CNC router. I see it as the finishing tool and the detail tool. If you need a 25mm hardwood sign, use a router. If you need 100 intricate acrylic keychains with engraved logos, the Aura gets it done faster and cleaner. I went back and forth between the Aura and a larger 40W CO2 machine for two weeks before deciding. The 40W offered thicker cutting; the Aura offered a calibrated camera system and workflow that fit how I actually work. It was the right call for me—but if your primary business is thick stock, you should be looking at a router or a larger laser.
What Can I Do With a Laser Engraver? The Money Applications
The real question behind "what can I do with a laser engraver" isn't about craft projects—it's about whether the machine earns its space in your shop. Based on my internal data from 200+ rush jobs, the applications that generate revenue are:
- Custom awards and plaques. Engraved acrylic or wood, high perceived value, made in under an hour.
- Event signage and table numbers. Wedding and conference season is my busiest window, and repeat orders come fast.
- Product prototypes. Designers need physical parts to validate—not two weeks of lead time.
- Leather goods. Tags, patches, wallets. Engraving adds value without adding assembly labor.
- Acrylic display stands. Retailers order small batches repeatedly; the Aura handles the pieces easily.
- Foam inserts for tooling. Custom cut EVA foam protects tools and equipment—another steady B2B use.
The common thread isn't wattage. It's short-run customization with fast turnaround. If you're going to mass-produce 10,000 identical coasters, you should talk to a contract manufacturer. If you need 50 coasters with a client's logo by Thursday, the Aura wins.
Prevention Over Cure: The $8,000 Checklist
I mentioned a client delivery that went wrong. Here's the full story. In September 2023, I promised a client a run of 12mm acrylic signs with a four-day turnaround. I'd cut 12mm acrylic before—on a different laser. I assumed the settings would transfer to the Aura. They didn't. The edges melted, the burn was uneven, and I had to reorder material and redo the whole job. The final cost: about $1,300 in material and wasted labor, plus the hit to my reputation.
Why do I share this? Because the failure wasn't the Aura's fault, and it wasn't the material's fault. It was my process. Since then, I've used a 12-point testing checklist for every new material or new batch. Confirm material type, run one scrap cut, inspect edges, adjust settings, repeat until clean. That checklist has saved me an estimated $8,000 in avoided rework over the past year. Five minutes of verification beats five days of correction—every time. It's the most important lesson I can pass along to anyone evaluating the Glowforge Aura, or any laser cutter.
Where the Aura Stops
I've made the Aura sound like an ideal shop tool, so let me balance that with its boundaries.
Material thickness. The Aura is designed for material roughly up to 12mm (about half an inch) in multiple passes, with clean results most realistic at 6mm and below. If your bread-and-butter is 20mm hardwood, this isn't the machine for you.
Material chemistry. Some materials are dangerous or destructive to laser cut. PVC and vinyl chloride release chlorine gas when vaporized—toxic to you and corrosive to the machine's optics. Never laser them. The Aura's software presets and material library help you avoid the most common hazards, but they're a starting point, not a warranty. Check the material yourself before committing a job.
Bed size. The Aura's work area is compact. I want to say it's roughly 8.5 × 12 inches, but I might be misremembering the exact dimensions—the point is, it's built for smaller pieces. For large-format work, you're looking at a bigger machine or an outside service.
Cloud dependency. The Aura requires an internet connection to operate. That's a dealbreaker for some shops, and it's a fair one. For my workflow it's fine, but if you want fully offline operation, this isn't the machine.
Metals. One more time, because it's the most common misconception: the Aura can mark coated and anodized metals, but it does not cut metal sheets. If your business is metal fabrication, a desktop CO2 laser—any brand—is not your tool.
Honestly, I'm not sure why some product pages make "laser cutter" sound like a universal material solution when no single machine is. My best guess is that compatibility tables are written to be safe, not ambitious, and buyers read what they want to read. The Aura at least gives you a clear material library and honest presets—which is exactly why it's been a reliable daily driver for me, not a disappointment.
