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In this guide
Wood, MDF and plywood are some of the most common materials for desktop CO₂ laser cutting. They are used for signs, boxes, lamps, wall decor, models, displays, gifts, packaging prototypes and small business products. On the Gweike MCore, these materials should be processed with the 80W CO₂ laser head, not the 400W fiber laser head.
This guide provides starting-point cutting parameters for wood board, plywood-style materials and MDF on the Gweike MCore 80W CO₂ laser. It also explains why wood settings vary so much, how to use air assist, how to reduce burn marks, and how to test a new sheet before production cutting.
Which Laser Head to Use on Gweike MCore
The Gweike MCore is a dual-laser desktop system. It combines a 400W fiber laser and an 80W CO₂ laser in one machine. The two laser sources are designed for different material categories.
CO₂ 80W Head
Use for wood, MDF, plywood, acrylic, leather, fabric and other non-metal or organic materials.
Fiber 400W Head
Use for metal cutting and metal engraving, including stainless steel, carbon steel, aluminum and brass.
| Material | Correct MCore Laser Head | Reason |
|---|---|---|
| Wood | CO₂ 80W | CO₂ wavelength is absorbed by organic materials. |
| MDF | CO₂ 80W | CO₂ laser is suitable for fiberboard and wood-based materials. |
| Plywood | CO₂ 80W | CO₂ laser can cut wood plies and glue-bonded wood panels. |
| Acrylic | CO₂ 80W | CO₂ wavelength is absorbed by acrylic. |
| Stainless steel / carbon steel | Fiber 400W | Fiber laser is used for metal cutting. |
| Aluminum / brass | Fiber 400W | Fiber laser is used for metal cutting and engraving. |
Do not use the fiber laser head for wood or MDF cutting. The fiber source is intended for metals. For non-metal materials such as wood, MDF, plywood, acrylic, leather and fabric, the CO₂ laser head is the correct starting point.
Wood Board, MDF and Plywood: Why Settings Differ
Wood is not a uniform material. Two sheets with the same thickness can cut very differently. A setting that cuts cleanly through 5mm basswood may leave heavy charring on 5mm pine or fail to cut through dense hardwood.
Wood board
Best for basswood, pine, poplar and similar softwood or medium-density boards. Resin, density and moisture change the result.
MDF
More uniform than solid wood, but produces dense smoke and formaldehyde-containing fumes from resin binders.
Plywood
Contains wood plies and glue layers, so it often needs slower speed than solid basswood of the same thickness.
Wood board
In this guide, “wood board” refers to pine, basswood, poplar, plywood-like softwood boards and similar softwood or medium-density materials. Basswood and poplar usually cut cleaner because they are relatively uniform and have lower resin content. Pine may need stronger air assist or slightly slower testing because resin can darken the cut edge.
MDF
MDF is more uniform than solid wood because it is manufactured from compressed wood fibers and resin binders. This makes it more predictable in cutting. At the same thickness, MDF can sometimes cut faster than solid wood board. However, MDF produces heavier smoke and more hazardous fumes than many solid woods, so fume extraction is especially important.
Plywood
Plywood is more variable than solid basswood because it contains wood plies, glue layers and sometimes mixed core materials. The glue layer can char, resist cutting or cause delamination near the edge. For plywood, use the wood board parameter table as the starting point, then reduce speed if glue layers, charring or incomplete penetration appear.
MCore 80W CO₂ Wood Board Cutting Parameter Chart
The following values use only the 80W CO₂ reference data for wood board. They are intended for pine, basswood, poplar, plywood-like softwood and similar medium-density wood boards.
| Material | Thickness | High Speed | Best Speed | Power | Air Assist | Notes |
|---|---|---|---|---|---|---|
| Wood board / basswood / pine / similar softwood | 3mm | 20 mm/s | 18 mm/s | ≈90% | Standard air assist | Best Speed gives cleaner visible edges. |
| Wood board / basswood / pine / similar softwood | 5mm | 15 mm/s | 10 mm/s | ≈90% | Standard air assist | Use Best Speed for finished products. |
| Wood board / basswood / pine / similar softwood | 10mm | 8 mm/s | 6 mm/s | ≈90% | Standard or stronger airflow | 80W is the practical starting point for regular 10mm cutting. |
| Wood board | 12mm | — | — | — | — | No 80W single-pass reference setting provided. |
All listed wood board values assume approximately 90% laser power, standard air assist and focus set at the material surface.
High Speed vs Best Speed
High Speed values are faster, but the cut edge may show more charring. They are useful when the edge is hidden or when throughput matters more than appearance.
Best Speed values are slower, but they generally produce cleaner edges with less visible burn. Use Best Speed when cutting display pieces, craft products, models, visible parts or finished products for customers.
MCore 80W CO₂ MDF Cutting Parameter Chart
MDF cuts differently from solid wood. Because its density is more uniform, the cutting result can be more predictable. However, MDF produces dense smoke and fumes, so extraction and air assist are especially important.
| Material | Thickness | Speed | Power | Air Assist | Notes |
|---|---|---|---|---|---|
| MDF | 3mm | 30 mm/s | ≈90% | Standard air assist | Single pass. |
| MDF | 6mm | 10 mm/s | ≈90% | Increase air assist for cleaner edges | Single pass. |
| MDF | 9mm | 3 mm/s | ≈90% | Standard or stronger airflow | Near the 80W single-pass limit. |
| MDF | 15mm | — | — | — | No 80W reference setting provided. |
Why MDF may cut faster than wood board
At 80W, the reference speed for 3mm MDF is 30 mm/s, while 3mm wood board uses 18–20 mm/s. This is because MDF density is more uniform and the laser interacts with a more consistent material structure.
Plywood Cutting Starting Points
The Gweike MCore wood board table can be used as the base reference for plywood, but plywood should not be treated exactly the same as solid basswood. Plywood contains glue layers and core materials that may cut slower, char more easily or delaminate near the cut edge.
The values below are starting ranges based on the wood board reference values. They are not separate factory-verified plywood settings.
| Material | Thickness | Starting Speed | How to Use This Value |
|---|---|---|---|
| Plywood / Baltic birch-style plywood | 3mm | 16–18 mm/s | Start from the 3mm wood board Best Speed and reduce if glue layers cause charring. |
| Plywood / Baltic birch-style plywood | 5mm | 9–10 mm/s | Start from the 5mm wood board Best Speed and reduce 5–10% if needed. |
| Plywood | 6mm | 8–9 mm/s | Use the 5mm wood board Best Speed and reduce 10–15%. |
| Plywood | 10mm | 5–6 mm/s | Start from the 10mm wood board Best Speed and reduce if glue layers affect penetration. |
For 6mm plywood, start around 8–9 mm/s on the MCore 80W CO₂ head, then test and adjust based on edge quality. If the cut edge shows delamination or heavy charring, improve air assist and smoke extraction before making large speed changes.
If you are cutting construction-grade plywood, test carefully. Some plywood uses glue that is not suitable for clean laser cutting. Laser-grade plywood or Baltic birch plywood is usually more predictable.
Air Assist Settings for Wood Cutting
Air assist is critical for wood and MDF cutting. Wood is combustible, and a slow cut without enough airflow can turn into sustained burning instead of clean laser cutting.
| Material / Thickness | Air Assist Guidance |
|---|---|
| 3–5mm wood board | Use moderate airflow, strong enough to clear smoke but not so strong that small pieces move. |
| 10mm wood board | Increase airflow to clear deeper kerf smoke and vaporized material. |
| 3–6mm MDF | Use active air assist and strong fume extraction. |
| 9mm MDF | Use stronger airflow and monitor smoke buildup carefully. |
| Plywood | Use enough airflow to clear smoke from glue layers and reduce edge charring. |
The source data does not provide a fixed MPa value for wood cutting, so this guide does not recommend a specific pressure number. For most wood cutting, the goal is not maximum air pressure. The goal is stable smoke clearing and fire control.
What happens with too little air assist
Too little air assist allows smoke and combustion products to stay inside the kerf. This can scatter the beam, reduce effective cutting power, darken the edge and increase the risk of fire.
What happens with too much air assist
Too much air assist can cool the cut front too aggressively. In some cases, this may require slower speed or higher power for full penetration. Excessive air blast can also move small parts or blow loose material back into the cut.
How to Reduce Burn Marks on Wood
Burn marks are common in wood laser cutting, but they can usually be reduced through air assist, smoke extraction, focus control and speed adjustment.
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Improve air assist first. If the edge is too dark, check whether air assist is active and properly directed. Stronger airflow can remove smoke and resin vapor from the cut front before it redeposits on the edge.
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Improve smoke extraction. Smoke that remains above or below the sheet can stain the surface. Make sure the extraction system is running before the laser fires.
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Check focus. Focus drift reduces effective cutting power. Warped wood can move the surface away from the correct focus position during the cut.
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Increase speed slightly if the edge is too dark. If air assist and extraction are already working, try increasing speed by 10–15% to reduce total heat input.
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Use better material. Low-resin wood and laser-grade plywood usually cut cleaner than resinous pine or construction plywood.
How to Test a New Wood Sheet
Because wood varies from batch to batch, do not start with production parts. Use a small test process first.
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Choose the closest reference setting. Select the closest material and thickness from the table. For example, start with 18 mm/s for 3mm basswood, 10 mm/s for 5mm softwood, 8–9 mm/s for 6mm plywood, or 10 mm/s for 6mm MDF.
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Cut a small test square. Use scrap material from the same sheet or batch. A small square is enough to show penetration, edge color and charring behavior.
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Check penetration. If the laser does not cut all the way through, reduce speed by 15–20% and test again.
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Check edge color. If the cut edge is too dark, improve air assist and smoke extraction first. If the edge is still too charred, try a slightly higher speed.
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Check material movement. If the cut edge is wavy or rough, check whether the wood is flat on the cutting bed.
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Save the final setting. Record the material type, supplier, thickness, speed, power, air assist setup and any notes about edge quality.
Troubleshooting
- The laser does not cut through the wood: Speed may be too high, material may be too dense or wet, or focus may not be calibrated. Reduce speed by 15–20% and test again.
- The edge is too dark or charred: Improve air assist and extraction first. Then test a slightly higher speed to reduce heat input.
- The cut edge is wavy or rough: The material may have moved, the sheet may be warped, or focus may have changed across the cutting area.
- Plywood delaminates at the cut edge: Glue layers may be charring near the cut line. Reduce speed slightly, improve air assist and test laser-grade plywood if edge quality matters.
- MDF cuts slower than expected: MDF produces dense smoke. Check that air assist and extraction are active, then verify focus position.
- Small flames appear during cutting: Stop and check air assist, extraction and material setup. Never leave the machine unattended while cutting wood or MDF.
Need More MCore Material Settings?
Wood, MDF and plywood are only part of the MCore material workflow. If you are also cutting acrylic, carbon steel, stainless steel, aluminum or brass, use the dedicated MCore parameter guides for each material.
View Gweike MCoreFAQ
Which MCore laser head should I use for wood and MDF?
Use the CO₂ 80W laser head. Wood, MDF, plywood, acrylic, leather and other organic materials should be processed with the CO₂ laser. The 400W fiber laser head is for metals.
What speed should I use for 3mm wood on Gweike MCore?
For 3mm wood board, use 20 mm/s as a high-speed starting point or 18 mm/s for cleaner visible edges. Both values assume approximately 90% power, standard air assist and focus at the material surface.
What speed should I use for 5mm wood?
For 5mm wood board, start at 10 mm/s if edge quality matters. A faster 15 mm/s reference exists, but the edge may show more charring depending on material type and air assist.
Can Gweike MCore cut 10mm wood?
Yes, the 80W CO₂ reference table includes 10mm wood board. Start at 6 mm/s for cleaner edges or 8 mm/s for a faster cut. Always test on scrap because dense wood, high moisture content or resinous material may require slower speed.
Can Gweike MCore cut 12mm wood?
The available 80W reference table does not provide a reliable single-pass setting for 12mm wood board. Treat 12mm wood as a test-required material rather than a guaranteed reference thickness.
What settings should I use for 6mm plywood?
Start around 8–9 mm/s on the MCore 80W CO₂ head. This starting point is based on using the 5mm wood board Best Speed and reducing it by about 10–15% to account for plywood glue layers. Test and adjust based on penetration and edge quality.
Why does MDF cut faster than wood board?
MDF has a more uniform density than many natural wood boards, so it can cut more predictably. At 80W, the reference speed for 3mm MDF is 30 mm/s, while 3mm wood board is 18–20 mm/s. However, MDF produces heavier smoke and requires strong extraction.
How do I reduce burn marks on wood?
Improve air assist and smoke extraction first. If the edge is still too dark, test a slightly higher speed to reduce heat dwell. Also check focus, material flatness and resin content. Low-resin wood usually cuts cleaner than resin-heavy material.
Is MDF safe to laser cut?
MDF can be laser cut, but it produces formaldehyde-containing fumes and fine particulate because of resin binders. Use active fume extraction and avoid cutting MDF in an unventilated space. Do not leave the machine unattended while cutting MDF.
Can I use these settings for hardwood like oak or walnut?
Dense hardwoods are not covered by the main reference table. Start at approximately 40–50% of the softwood reference speed for the same thickness and test carefully. Dense hardwoods require more energy and may need slower speed or multiple passes.
Final Notes
The Gweike MCore 80W CO₂ head can cut wood board, MDF and plywood-style materials, but wood is highly variable. Species, moisture content, resin level, glue layers, surface condition and grain direction can all change the final result.
Use the parameter tables in this guide as starting references, not guaranteed final settings. Always test on scrap material from the same batch, inspect penetration and edge quality, then save your final settings as material presets.
