Home › Materials › Laser cutting Plywood 3mm: speed, time and cost
Laser cutting Plywood 3mm: speed, time and cost
Plywood 3mm cuts at about 20 mm/s on a 100 W CO2 laser in one pass. Below: what that means in time and money on common machines, plus settings tips. Price your own file in the calculator — it runs in your browser, nothing is uploaded.
Open the calculator preset for Plywood 3mm →Plywood 3mm at a glance
| Material group | Plywood |
|---|---|
| Thickness | 3 mm |
| Reference cut speed (100 W CO2) | 20 mm/s × 1 pass |
| Air assist | strong air assist |
| Diode lasers | yes, slower (5–10×), more passes as thickness grows |
Time and cost by machine (100 × 60 mm part, €60/h)
| Machine | Speed | Time | Machine cost |
|---|---|---|---|
| xTool D1 Pro 10W | 4 mm/s | 1 m 20 s | €1.33 |
| xTool D1 Pro 20W / S1 20W | 6 mm/s | 53 s | €0.89 |
| OMTech K40 (40W CO2) | 10 mm/s | 32 s | €0.53 |
| OMTech / Gweike 60W | 15 mm/s | 21 s | €0.36 |
| OMTech / Thunder / Gweike 80W | 18 mm/s | 18 s | €0.30 |
| 100 W CO2 (workshop reference) | 20 mm/s | 16 s | €0.27 |
Speeds scale from the workshop reference by machine class. Material, setup and margin come on top — open the calculator to add them and nest parts on your sheet.
Settings tips for Plywood 3mm
birch ply cuts cleaner than poplar; glue voids cause incomplete cuts — add a pass rather than power. Test-cut a small square first: dial speed, not power, until it just cuts through — cleaner edge, less char.
Can your machine actually cut this?
Plywood is the friendliest material on this list — every machine type here will cut it. What changes between a diode and a CO2 machine is only how many passes and how dark the edge comes out. A 10 W diode will get through 3 mm but will char it; a 60 W CO2 goes through in one fast pass with a much lighter edge.
3 mm is the sweet spot for most machines here. A CO2 machine will do it in one pass; a diode usually wants two at a moderate speed rather than one slow crawl, because a slow single pass dumps heat into the surrounding material and chars the face. If a cut fails at this thickness the cause is almost always focus, not power — check that the focus is set to the surface before you turn anything up.
Buying the right sheet
Buy laser-grade or aircraft ply, not construction ply. This is the single biggest cause of "my laser won't cut through". Cheap plywood contains internal voids — pockets of air and glue between the veneers. The beam crosses a void, loses its focus and the cut simply stops in the middle of an otherwise perfect line. No settings change fixes a void. Glue lines also char darker than the wood around them, which is why some cuts come out stripey.
Safety — read this before the first cut
Nothing toxic here, but plywood is the most common cause of laser fires because it cuts slowly enough to sustain a flame. Do not leave it running unattended.
Getting a clean edge
Two accessories fix more plywood complaints than any settings change. A honeycomb bed stops the beam reflecting off a solid surface back into the underside of the sheet — that reflection is what causes the brown halo people blame on too much power. Air assist blows smoke out of the kerf before it can stain the cut face. Masking tape on the top surface handles the rest.
Plywood 3mm FAQ
How fast can you laser cut Plywood 3mm?
On a 100 W CO2 laser about 20 mm/s in a single pass. Diode lasers are roughly 5× slower (and need more passes above 3 mm). A 100 × 60 mm part (320 mm of cutting) takes about 16 s at 20 mm/s.
How much does laser cutting Plywood 3mm cost?
Laser cutting is priced by machine time: cut length ÷ speed = time, × hourly rate (€60/h typical for a small shop) + setup + material. At 20 mm/s a 100 × 60 mm part is about €0.27 of machine time before material and setup.
What settings do I use for Plywood 3mm?
Start from your machine's plywood preset, use strong air assist, and do a test cut: if it doesn't cut through, slow down 10–15% before adding power. birch ply cuts cleaner than poplar; glue voids cause incomplete cuts — add a pass rather than power.
Where to buy Plywood 3mm
Look for void-free laser ply — cheap construction plywood hides gaps that stall a cut halfway through and leave you flexing a sheet that will not separate.
Check prices on Amazon ↗ Where to buy laser materials
Some links are affiliate links: if you buy through them we may earn a small commission at no extra cost to you. It keeps this calculator free.
Other Plywood: Plywood 4mm · Plywood 5mm · Plywood 6mm