Cutting EVA Foam on the Ray5 20W
ray5eva foamcuttingcosplay
EVA foam cuts cleanly and quickly on the Ray5. Popular for cosplay armor, packaging inserts, tool foam drawer organizers, and gaskets.
Material Safety
EVA (ethylene-vinyl acetate) is generally safe to laser cut — it produces CO2, water, and some organic compounds but is much safer than PVC or chlorinated materials.
How to identify EVA vs PVC:
- EVA: smells like a sweet/candy-like scent when cut
- PVC: sharp acrid smell, produces chlorine gas — never laser this
Settings
| Thickness | Speed | Power | Passes |
|---|---|---|---|
| 3mm (thin) | 3000 mm/min | 40% | 1 |
| 6mm | 2000 mm/min | 55% | 1–2 |
| 10mm | 1500 mm/min | 70% | 2 |
| 15mm (thick) | 1000 mm/min | 80% | 2–3 |
Air assist helps clear molten material but keep pressure low — strong air blast causes foam to flutter.
Engraving EVA
For tool foam inserts — engrave shallow pocket shapes for each tool:
- Speed: 4000 mm/min, Power: 20%
- Creates a depressed area for tool to sit in
- Very popular for shadow boxes and shop organization
Getting Clean Cuts
- Weight or tape foam flat — it curls when heated
- Move in a single pass where possible — multiple passes can melt/weld the cut faces
- Let cool before handling — cuts close slightly when hot
- Honeycomb bed works well; EVA doesn't need as much elevation as wood
Post-Cut Finishing
- Edges can be smoothed with a heat gun (careful — easy to overdress)
- Paint with acrylic or PlastiDip for cosplay applications
- Seal with foam clay or wood glue for rigid finish