Can the xTool M1 Ultra Cut Acrylic? A Quality Inspector's Breakdown by Use Case

If you're looking at the xTool M1 Ultra and wondering if it can handle acrylic, you're asking the right question. Acrylic is one of the most popular materials for laser work—signage, displays, jewelry, prototypes—but it's also one of the trickiest. The answer isn't a simple yes or no. It depends on what you're trying to do, how thick the material is, and whether you need a clean edge or just a surface mark.

I'm a quality compliance manager in the equipment space. Over the last four years, I've reviewed roughly 200+ unique items annually—from desktop craft machines to industrial cutting systems. In our Q1 2024 audit alone, we rejected 12% of first deliveries because specs didn't match promised performance. So when I say the xTool M1 Ultra can cut acrylic, I mean it with conditions.

Let's break it down by scenario.

Scenario A: You Want to Cut Thin Acrylic (Up to 3mm)

This is the most common use case, and the good news is: yes, the xTool M1 Ultra can cut acrylic up to about 3mm (1/8 inch). The machine uses a 20W or 40W diode laser, which is powerful enough to cut through cast acrylic of that thickness—but only with the right settings.

Key specs you need to know:

• Material: Cast acrylic (not extruded). Extruded acrylic melts and re-welds behind the cut. Cast acrylic vaporizes cleanly.
• Speed: For 3mm cast acrylic at 100% power, expect about 5–8 mm/s. If you push faster, the cut won't penetrate.
• Passes: 2–3 passes usually do the job. The first pass scores the surface, the second and third cut through.

Where it works well:

• Small signage (nameplates, keychains)
• Jewelry and earring blanks
• Prototyping parts for product design

Where it struggles:

• Thick acrylic (6mm+). The 20W diode simply doesn't have the power density for a clean cut through 6mm. You'll end up with melted edges and incomplete cuts.
• Extruded acrylic. Even at 3mm, extruded acrylic tends to bubble and fuse. Stick to cast acrylic for laser work.

In my experience, most hobbyists and small studios are satisfied with 3mm cuts. If you're doing keychains or light signage, the M1 Ultra is plenty. But if you consistently need 6mm acrylic, you're better off with a CO2 laser—or outsourcing that part.

Scenario B: You Want to Engrave Acrylic (Thick or Thin)

Engraving is where the xTool M1 Ultra shines—partly because of the 2W infrared (IR) diode module it ships with. The IR laser focuses to a very small spot size, which means it can produce finer details than the blue diode. For acrylic engraving, this is a game-changer.

What the IR module does well:

• Deep engraving on cast acrylic. The IR diode creates a frosted, white appearance that's very popular for awards and plaques.
• Fine detail text and logos. I've tested it on 3mm and 6mm acrylic, and the edge quality is noticeably sharper than what I get with the blue diode.

What the blue diode module does well:

• Surface engraving on colored acrylic. If you have a dark cast acrylic sheet and want a light mark, the blue diode (20W or 40W) works fine—just expect less contrast than a CO2 laser.
• Large-area engraving. The blue diode covers more area per pass, so for full-sheet engraving, it's faster than the IR module.

Honest trade-off:

• The IR module engraves with more contrast, but it's slower. For a 10x10 cm plaque, I'm looking at 15–20 minutes with IR versus 8–10 minutes with the blue diode. The quality difference is visible, but for some applications, speed wins.
• Neither module matches the speed of a CO2 laser for engraving thick acrylic. If you're doing volume plaque work (50+ per week), the M1 Ultra might feel slow.

Here's something I wish someone had told me earlier: the IR module's focus height is extremely sensitive. A 0.5mm difference in Z-axis position changes the engraving depth noticeably. When I first tested it, I was getting inconsistent results—some lines were deep, others barely visible. It took me about 10 test runs to dial in the focus. Plan for that learning curve.

Scenario C: You Want to Use the Galvo Laser (Fast Marking)

The xTool M1 Ultra has an optional galvo laser module—basically a 2W infrared laser with a galvanometer scanning system. The galvo mirrors move incredibly fast, so the laser can jump from point to point almost instantly. This is useful for one thing: high-speed marking on small areas.

Where galvo makes sense:

• Batch marking of small parts (like serial numbers on 20 acrylic blanks)
• Very fine text (1–2mm tall) that requires pinpoint accuracy
• Dark engraving on clear acrylic (produces a frosted effect with high contrast)

Where galvo doesn't help:

• Cutting. The galvo module is marking-only. If you need to cut, you use the blue diode module.
• Large-area engraving. The galvo's field of view is about 100x100 mm. To engrave a full A4 sheet, you'd need to tile—which is slow and risks misalignment.

I used the galvo to mark 200 acrylic keychains for a client's promotional event. Each keychain took about 12 seconds. The whole batch, including setup, took about 50 minutes. If I'd used the blue diode for the same job, I'd have been at it for 4 hours. So for small, repetitive marking, the galvo is a time-saver.

But here's the catch: the galvo creates a slightly different color mark than the diode laser. On clear cast acrylic, the galvo produces a bright white frosted effect, while the blue diode gives a more transparent, less visible mark. If color consistency matters across a product line, you'll want to stick with one module for the entire job.

How to Decide: Are You an M1 Ultra Acrylic Candidate?

Now that you've seen the scenarios, here's how to figure out which one you're in:

1. Ask yourself: What's my primary use? If cutting acrylic is more than 30% of your work, seriously consider whether 3mm thickness is enough. If you need 6mm+ cuts, the M1 Ultra isn't your tool—you need a CO2 laser.
2. Ask yourself: What's my volume? If you're doing 10–20 acrylic pieces per week, the M1 Ultra is fine. If you're doing 100+ per week, the speed limitations will frustrate you. The galvo module helps for marking, but it doesn't speed up cutting.
3. Ask yourself: What finish quality do I need? Edge quality on cut acrylic with a diode laser is rougher than CO2. The edges need flame polishing or sanding to look professional. If you can't afford post-processing time, the M1 Ultra may not deliver acceptable results.

I've had customers tell me they bought the M1 Ultra expecting it to replace their outsourced acrylic cutting entirely. It works for some—the ones doing thin material, small batches, and willing to dial in settings. It doesn't work for others—the ones needing thick cuts, high volume, or clean edges straight off the machine.

If you're in the first group, the xTool M1 Ultra is a capable tool for acrylic work. If you're in the second, save yourself the frustration and either invest in a CO2 system or keep outsourcing. Honestly, knowing which group you're in is half the battle.