Will Plasma Cutter Cut Aluminum? I Almost Bought a Desktop CO2 Laser Before Reading the Ortur 20W Manual

I keep a running cost spreadsheet for every purchase over $500. That's not a flex. I've managed our tooling and consumables budget—roughly AU$90,000 a year—for six years, and I've approved too many “cheap” options that turned out expensive to trust anyone's list price. The spreadsheet has columns for quoted price, shipping, accessories, consumables, maintenance, training time, and something I call “annoyance factor.”

Last July (2024), our shop got approval to spend AU$4,200 on a laser cutter/engraver. I'm the procurement manager at a 12-person fabrication company in Brisbane, and our customers kept asking for two things: engraved aluminum nameplates and cut acrylic signs. We didn't own a laser. My first search query, honestly, was “laser cutter engraver Australia.” My second was “will plasma cutter cut aluminum.”

Will plasma cutter cut aluminum? Yes. But that was the wrong question.

The short answer is yes. A plasma cutter will cut aluminum. So will a waterjet. So will a bandsaw. The question is what else you need the machine to do.

We needed to etch logos, mark serial numbers, and cut acrylic without melting the edges. A plasma cutter can't do any of that. It creates a heat-affected zone that's ugly on thin aluminum, it needs an air compressor, and it produces dross that has to be cleaned off. I ruled it out quickly.

That first search taught me something useful though: “will plasma cutter cut aluminum” is often asked by people who want to make aluminum parts, not by people who want to engrave them. Those are different jobs. My spreadsheet forced me to separate them before comparing machines.

The desktop CO2 laser quote that looked great until I asked one question

Next, I called a desktop CO2 laser supplier. The base unit was AU$3,850. That number fit our budget. I was ready to send a purchase order.

Then I asked “what's NOT included?”

That question changed everything. The AU$3,850 didn't include the water chiller (AU$780), the air assist upgrade (AU$240), the rotary attachment (AU$390), or delivery to Brisbane (AU$195). It also didn't include the fume extraction system, which was another AU$520. Total: AU$5,975.

I also added electricity to my mental total, because a CO2 tube needs the chiller running whenever it's on. I didn't know the exact number, but I knew it wasn't zero. That's the thing about TCO: it's not about finding hidden fees; it's about noticing them before you sign.

Look, this isn't about criticizing the CO2 supplier. The base price was clearly listed. But the word “base” did a lot of work. I've learned that the vendor who lists all fees upfront—even if the total looks higher—usually costs less in the end. That's the transparency I wanted from every quote after that.

Why I kept returning to the Ortur 20W

Around that time, I found the Ortur ecosystem through a community post. I saw the Ortur Laser Master 2 S2 manual available on the official site, so I downloaded it.

I know it sounds weird to read a manual before buying. Doing that has saved me more money than any discount code. The Ortur Laser Master 2 S2 manual had a material settings table. That sounds boring, but it's the most practical thing a buyer can read: it told me what to expect, what to adjust, and what could damage the machine.

The Ortur laser 20w module was the version I kept pricing. The bigger draw was the ecosystem: I could start with the machine, add the 20W module, and later add a rotary roller or air assist if a job needed it. That made the total cost easier to control than buying a sealed CO2 unit with a set list of accessories.

When I compared the final numbers, the Ortur option came in around AU$1,800 below the CO2 quote: roughly AU$4,175, just under the AU$4,200 we'd been approved to spend. But the price wasn't the only reason I chose it. The manual listed maintenance expectations, and the community posts included real cut settings, not just marketing examples.

The twist: the 20W diode didn't cut raw aluminum

Here's where I almost messed up. I told my manager the Ortur 20W could replace the plasma cutter for aluminum. It can't.

The Ortur Laser Master 2 S2 manual was clear about it: a diode laser can engrave and mark anodized aluminum, but it does not cut raw aluminum. If I'd skimmed the manual instead of reading it, I would've bought the wrong tool and blamed the machine for a limitation that was documented in black and white.

The most frustrating part of comparing laser equipment is that wattage numbers don't transfer across laser types. A 20W diode laser and a 60W CO2 laser use different wavelengths and interact with materials differently. I had to stop comparing calculators and start comparing material test results.

This is the same mistake I made when I asked “will plasma cutter cut aluminum?” without asking “will it do the job the way I need it done?” Plasma will cut aluminum. It just won't engrave it. The Ortur 20W will engrave anodized aluminum. It just won't cut it. Different jobs, different tools.

I also had to admit my own cost bias. I wanted one machine to do everything because one machine costs less than two. That's true until the one machine can't do a core job and you pay a contractor to finish it.

What I'd actually buy after calculating total cost

We ended up with the Ortur laser cutter/engraver. For our Brisbane shop, it made sense: we cut acrylic covers, engrave aluminum nameplates, and do small wood signs. We still outsource thick aluminum plate cutting to a nearby metal laser shop.

Here are the honest boundaries of my experience: this worked for us because we're a 12-person shop with predictable, small-batch orders. If you're cutting 6mm aluminum plate every day, buy a plasma cutter or a fiber laser. If you're mainly cutting acrylic sheets in high volume, a desktop CO2 laser is a perfectly rational choice. I'm not saying Ortur is right for everyone. I'm saying the process is the same: build a realistic total cost, read the actual manual, and know what the machine will and won't do.

So, will a plasma cutter cut aluminum? Yes. But the better question is: will it do the full job for you? In our case, the answer was no. A desktop CO2 laser got closer on paper, but the total cost was higher than the Ortur 20W package—and the manual made the limitations easier to see before the invoice was signed.

I still keep the Ortur Laser Master 2 S2 manual on my desktop. Not because I love reading PDFs, but because the material settings table is the kind of spec sheet that tells you what to do when the first test piece comes out wrong.

(For context: I treat brand-color tolerance the same way Pantone does—Delta E < 2 for a close match. If a logo is off by more than that, customers notice. I applied that same pickiness to laser engraving consistency.)

So glad I read the manual before ordering. I was one click away from approving the CO2 quote, and the only thing that stopped me was a question I learned to ask after getting burned in 2022: “what's not included?”

All pricing mentioned above was accessed in July 2024. Verify current rates with each supplier before you order.