So you've got a laser — or you're about to buy one — and now the real question hits: what can you actually put under the beam?
Not every material behaves the same way. Some cut clean and engrave beautifully. Others release toxic fumes, melt into a gooey mess, or damage your machine outright. This guide breaks down what works, what to avoid, and what settings to keep in mind, whether you're running a diode, CO₂, fiber, or galvo laser.
Materials That Work Great
Wood
The most forgiving and popular material for laser work. Plywood, MDF, basswood, and birch all engrave and cut cleanly on CO₂ and most diode lasers.
- Best for: Cutting, engraving, photo etching
- Tip: Avoid pressure-treated wood — the chemicals used in treatment can release harmful fumes when burned.
Acrylic
Cast acrylic engraves with a frosted, professional finish and cuts with a smooth, flame-polished edge on CO₂ lasers.
- Best for: Signage, awards, display pieces
- Tip: Cast acrylic (not extruded) gives far better results — extruded acrylic tends to melt and bubble more.
Leather
Genuine and vegetable-tanned leather engrave beautifully, producing a dark, rich contrast that's popular for wallets, belts, and pet accessories.
- Best for: Engraving, light cutting
- Tip: Avoid bonded or chrome-tanned leather — the chemical coatings can be hazardous when burned.
Anodized Aluminum
This is where fiber and MOPA lasers shine. The laser removes the anodized coating layer to reveal the metal underneath, creating crisp, permanent marks.
- Best for: Tumblers, tools, industrial parts, nameplates
- Tip: Requires a fiber or MOPA laser — CO₂ and diode lasers can't mark bare or anodized metal effectively.
Stainless Steel
With the right fiber laser settings, you can achieve everything from matte engraving to vivid color marking (a technique called laser annealing).
- Best for: Tools, jewelry, industrial labeling
- Tip: Color marking depends heavily on speed and power — small test grids save a lot of wasted material.
Slate and Stone
Slate coasters and stone tiles engrave with a clean, high-contrast white finish that's extremely popular for personalized gifts.
- Best for: Engraving only (not cutting)
- Tip: Use a rotary attachment for cylindrical stone or glass items like tumblers.
Paper and Cardstock
Great for intricate cut designs — invitations, gift tags, and layered paper art.
- Best for: Cutting, light engraving
- Tip: Lower power and higher speed prevent scorching on thin paper.
Materials to Avoid — Ever
Some materials should never go under a laser, regardless of machine type, because they release toxic or corrosive fumes:
- PVC (vinyl) — releases chlorine gas, which is corrosive to both lungs and machine components
- ABS plastic — releases cyanide gas when cut
- Polycarbonate — tends to burn rather than cut cleanly and can release harmful fumes
- Fiberglass — releases toxic fumes and glass particulate
- Any material of unknown composition — when in doubt, look up the safety data sheet (SDS) first
Quick Reference by Laser Type
| Material | CO₂ | Diode | Fiber / MOPA |
|---|---|---|---|
| Wood | ✅ | ✅ | ❌ |
| Acrylic | ✅ | ⚠️ (cutting limited) | ❌ |
| Leather | ✅ | ✅ | ❌ |
| Anodized Aluminum | ❌ | ❌ | ✅ |
| Stainless Steel | ❌ | ❌ | ✅ |
| Slate/Stone | ✅ | ✅ | ⚠️ |
| Paper | ✅ | ✅ | ❌ |
Final Thoughts
Matching the right material to the right machine is half the battle in laser work — the other half is dialing in your speed and power settings, which is worth its own guide entirely. If you're still deciding which machine fits your project list, check out our earlier post on How to Choose the Right Laser Cutter for Your Business.
Got a material you're not sure about? Drop it in the comments and we'll help you figure out if it's laser-safe.