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In this guide
A successful first MCore cut depends on completing the setup in the correct order: identify the material, measure its thickness, choose the correct laser source, load the complete material preset and verify the result on scrap before moving to production.
This guide covers the workflow from job preparation to a verified first-cut preset. It does not replace the current MCore installation manual, electrical instructions, gas-supply instructions or commissioning procedure.
Use one controlled workflow for every first cut
Choose the correct guide, enter one complete parameter row, run a small test and adjust only one variable at a time.
Quick Start: Your First MCore Cut in 10 Steps
| Step | What to Do | Why It Matters |
|---|---|---|
| 1 | Identify the exact material | Prevents using the wrong material guide |
| 2 | Measure the actual thickness | Selects the correct parameter row |
| 3 | Choose cutting or engraving | The two processes use different settings |
| 4 | Select Fiber 400W or CO₂ 80W | The sources are not interchangeable |
| 5 | Open the matching parameter guide | Provides the correct starting reference |
| 6 | Prepare the machine and material | Reduces setup-related failures |
| 7 | Enter the complete preset | Speed and power alone are not enough |
| 8 | Verify position and boundary | Prevents the path leaving the workpiece |
| 9 | Run a small scrap test | Protects production material |
| 10 | Inspect, adjust and save | Creates a repeatable workflow |
Before You Turn On the Laser
Complete installation and commissioning first
Complete all installation, connection and commissioning steps in the current MCore documentation before following this article. Confirm electrical connection, exhaust, cooling, gas or compressed-air supply, regulators, filtration, emergency-stop access and software communication.
Identify the exact material
Do not begin with a broad description such as “metal,” “wood,” “plastic” or “leather.” Record the specific material information whenever possible.
Measure the actual thickness
Do not rely only on a supplier label. Measure the workpiece and select the matching parameter row. Do not estimate an unlisted thickness by averaging adjacent rows.
Prepare a representative scrap sample
Use scrap from the same material type and preferably the same production batch as the final workpiece. The sample should be flat, clean, large enough for a small square and circle, and positioned away from clamps or obstructions.
Choose the Correct MCore Laser Head
Use the 400W Fiber Laser
Use the fiber source for the current MCore metal parameter categories:
- Carbon steel
- Stainless steel
- Aluminum
- Brass
Use the 80W CO₂ Laser
Use the CO₂ source for approved non-metal materials covered by the current guides:
- Acrylic
- Wood and MDF
- Leather
- Fabric and felt
For engraving, open the Gweike MCore Fiber vs CO₂ Engraving Settings Guide.
Choose the Correct MCore Parameter Guide
| Material or Process | Laser Source | Detailed Guide |
|---|---|---|
| Carbon steel cutting | Fiber 400W | Carbon Steel Parameters |
| Stainless steel cutting | Fiber 400W | Stainless Steel Parameters |
| Aluminum / brass cutting | Fiber 400W | Aluminum & Brass Settings |
| Acrylic cutting | CO₂ 80W | Acrylic Speed Chart |
| Wood / MDF cutting | CO₂ 80W | Wood & MDF Parameters |
| Leather cutting | CO₂ 80W | Leather Settings |
| Fabric / felt cutting | CO₂ 80W | Fabric & Felt Parameters |
| Metal or non-metal engraving | Fiber / CO₂ | Engraving Settings |
For the complete parameter index, open the Gweike MCore Laser Settings and Parameters Guide.
Prepare the MCore for the First Test
Fiber metal checklist
- Correct metal and thickness confirmed
- Fiber source selected
- Correct assist gas selected
- Gas supply and measurement point checked
- Correct nozzle type and size installed
- Nozzle condition inspected
- Focus taken from the matching row
- Material flat and stable
CO₂ non-metal checklist
- Exact material composition confirmed
- CO₂ source selected
- Exhaust active
- Airflow or air assist ready
- Material flat and secured
- Focus set from the guide or manual
- Loose scraps removed
- Material confirmed laser-safe
Inspect the work area
Remove previous scraps, tools, loose combustible debris and any obstruction that may interfere with the path. Keep normal controls and the emergency stop accessible.
Confirm nozzle, gas and airflow
For fiber cutting, use the gas, pressure, nozzle type, nozzle size and height setting listed for the exact material and thickness. Changing from compressed air to oxygen may require changes to speed, frequency, focus, nozzle, height, pressure and power.
Review MCore O₂ vs Air for Carbon Steel Cutting before changing gas configurations.
For CO₂ processing, confirm exhaust and appropriate airflow. Excessive airflow can move light fabrics; insufficient extraction can increase smoke staining and heat buildup.
Position the material flat and secure
Check for bowing, wrinkles, raised corners, loose protective film, gaps under the material, airflow-related movement and contact with fixtures. A correct preset can still produce a poor result on an unstable workpiece.
Verify focus
Use the focus value from the matching material guide or current MCore documentation. Do not estimate by eye, transfer focus from another thickness or assume cutting and engraving use the same value.
Load the Complete Starting Preset
| Parameter | What to Confirm |
|---|---|
| Laser source | Fiber 400W or CO₂ 80W |
| Process | Cutting or engraving |
| Material | Exact category and surface condition |
| Thickness / target depth | Must match the guide |
| Power | Use the listed value or verified range |
| Speed | Use the matching row |
| Focus | Do not carry over from another material |
| Gas / airflow | Correct assist gas or non-metal airflow |
| Pressure | Correct value and measurement point |
| Nozzle | Correct type and size |
| Height setting | Use only where provided |
| Frequency / duty cycle | Use where listed |
| Pass count | Do not assume when not specified |
Some source tables contain values whose units are not explicitly stated. Preserve the source value and do not add %, Hz, kHz or mm unless the unit is confirmed in the table or current software documentation.
Position the First Test
Place the test geometry fully inside the scrap sample, away from edges, clamps, warped areas and old cut paths.
Use the positioning, camera-preview or boundary-check tools available in the current Mlaser version. Software interfaces can change, so follow the current MCore manual for origin and placement procedures rather than relying on button names from another Gweike product.
Position check
- Design fully inside the material
- No path crosses a clamp
- Origin is correct
- Selected layer is correct
Boundary check
- Correct source assigned
- Design not mirrored unexpectedly
- Scale is correct
- Job remains inside the usable area
Use a Simple First-Cut Test File
The first job should be small and easy to evaluate. A practical test layout can include a 20 × 20mm square, a 10mm circle, a small internal hole, a straight line, a 90-degree corner and a short text label.
| Test Shape | What It Reveals |
|---|---|
| Square | Straight-line cutting and corner behavior |
| Circle | Motion consistency and curve quality |
| Internal hole | Piercing and small-feature performance |
| Straight line | Continuous penetration |
| 90-degree corner | Heat buildup and corner accuracy |
| Short text | Fine-detail control |
This is a practical workflow recommendation, not an official universal MCore test file.
Start the Test and Monitor the Machine
Start the first test and remain at the machine throughout the job.
Watch for setup instability
- Failure to pierce
- Cut interruption
- Abnormal gas flow
- Heavy bottom dross
- Material movement
- Nozzle contact
Watch for heat and fire risk
- Sustained open flame
- Abnormally dense smoke
- Warping or melting
- Fabric movement
- Strong chemical odor
- Failure to cut through
Inspect the First Result
| Check | What to Look For |
|---|---|
| Penetration | The full path is cut through |
| Start point | Pierce area is not excessively damaged |
| Edge quality | No unacceptable dross, melting or charring |
| Geometry | Corners and circles remain recognizable |
| Kerf | Width is reasonably consistent |
| Surface | No unacceptable heat damage |
| Part release | Part separates without forced bending |
Inspect the underside and pierce
Check full penetration, bottom dross, burr formation, pierce condition, kerf consistency, corners, small holes and deformation.
Inspect melting and edge clarity
Check penetration, edge texture, roughness, heat buildup, corner deformation and bottom residue.
Inspect charring and smoke staining
Check penetration, glue-layer behavior, resin buildup, corner darkening and warping.
Inspect darkening, odor and movement
Check edge darkening, residue, melting, fraying, stiffness, wrinkles and material movement.
Adjust One Parameter at a Time
Confirm material and thickness
Verify the workpiece before changing any setting.
Confirm process and laser source
Check cutting versus engraving and Fiber versus CO₂.
Confirm the complete parameter row
Make sure the preset matches the material, thickness and gas.
Check focus, nozzle and gas
Setup errors can look like insufficient power.
Check material flatness and position
Correct workholding before changing laser values.
Change one variable
Adjust only one verified value, run another test and record the result.
If the material does not cut through
Check the laser source, thickness, parameter row, focus, nozzle, gas or airflow, pressure, material flatness, speed and power—in that order.
If metal has heavy dross or burrs
Check focus, speed, pressure, nozzle type, nozzle condition, height setting, surface condition and flatness. Do not copy a focus or pressure value from another thickness.
If acrylic melts
Check thickness, speed, focus, airflow, acrylic type, heat buildup, pass count and protective film. Return to the MCore Acrylic Cutting Speed Chart.
If wood becomes too dark
Check speed, power, exhaust, airflow, resin content, moisture, density and pass count. Return to the MCore Wood and MDF Cutting Parameters.
If leather or fabric moves
Correct airflow, workholding, wrinkles, flatness, cut order and backing before changing laser power.
Save a Verified Material Preset
After the result is acceptable, save the complete configuration together with the material information.
First-Cut Workflows by Material Category
Fiber Metal
- Confirm metal and thickness
- Select Fiber 400W
- Open the matching guide
- Select gas and nozzle
- Enter the complete row
- Verify focus and pressure
- Run and inspect a scrap test
- Save the verified preset
Acrylic
- Confirm type and thickness
- Select CO₂ 80W
- Open the acrylic chart
- Confirm exhaust and airflow
- Verify focus
- Run square-and-circle test
- Inspect melting and edge clarity
- Save the preset
Wood / MDF
- Confirm board and thickness
- Select CO₂ 80W
- Open the wood/MDF guide
- Activate exhaust
- Verify focus and airflow
- Run a small test
- Inspect charring and glue layers
- Save a board-specific preset
Leather
- Confirm composition
- Confirm laser safety
- Select CO₂ 80W
- Activate exhaust
- Flatten the material
- Run a small outline
- Inspect odor and darkening
- Save after verification
Fabric / Felt
- Confirm fiber type
- Confirm laser safety
- Select CO₂ 80W
- Secure wrinkles and edges
- Check airflow
- Run a short line and shape
- Inspect fraying and melting
- Save a material-specific preset
Engraving
- Choose Fiber or CO₂ by material
- Open the engraving guide
- Select the listed target depth
- Load the full engraving row
- Test on scrap
- Inspect depth and detail
- Adjust one variable
- Record pass count
Common First-Cut Mistakes
Choosing the wrong source
Do not use a fiber-metal preset for acrylic or a CO₂ non-metal preset for carbon steel.
Copying only speed and power
Focus, nozzle, gas, pressure, height, frequency and duty cycle may also be part of the preset.
Not measuring thickness
A preset for the wrong thickness can fail even when every field is entered correctly.
Testing on production material
Use representative scrap from the same batch before cutting the final workpiece.
Changing several variables
Change one value, retest and record the result.
Extrapolating unlisted settings
A slower 3mm preset does not automatically become a verified 4mm preset.
Mixing cutting and engraving
The process goals and parameter ranges differ.
Changing only the gas
Gas-specific presets may also require different speed, focus, nozzle, height, pressure and power.
Leaving the machine
Remain present throughout every first test.
Not saving the result
A successful cut that is not recorded is difficult to reproduce.
Materials and First-Cut Safety
PVC and unknown vinyl may release hazardous and corrosive fumes. Read why you should not laser cut PVC and safer alternatives.
First-cut safety checklist
- Installation and commissioning are complete
- Material composition is confirmed
- Material thickness is measured
- Correct laser source is selected
- Correct material guide is open
- Complete preset is entered
- Nozzle and focus are checked
- Gas or airflow is ready
- Exhaust is active where required
- Material is flat and secure
- Processing boundary is verified
- Work area is clear
- Emergency stop is accessible
- Operator will remain at the machine
Frequently Asked Questions
What should I cut first with Gweike MCore?
Start with a known, laser-safe material for which a published MCore parameter guide exists. Use a small scrap sample from the same material batch as the intended production work.
Should I use the 400W fiber or 80W CO₂ laser?
Use the 400W fiber laser for supported metals such as carbon steel, stainless steel, aluminum and brass. Use the 80W CO₂ laser for approved non-metals such as acrylic, wood, MDF, leather, fabric and felt.
Where can I find Gweike MCore settings?
Use the complete Gweike MCore laser settings and parameters guide.
Can I use one preset for different thicknesses?
No. Thickness can change speed, focus, pressure, nozzle selection and other fields. Use the row that matches the actual measured thickness.
Should I test on production material?
Use scrap from the same material type and batch before processing the production piece.
What should a first-cut test file include?
A small square, circle, internal hole, straight line and corner are useful for checking penetration, geometry and edge quality.
How do I know whether the cut is successful?
The full path should cut through consistently, the part should separate without forced bending, and the edge should not have unacceptable dross, melting, charring or deformation.
What should I change if the material does not cut through?
First confirm material, thickness, laser source, parameter row, focus, nozzle, gas, pressure and flatness. Do not automatically increase power.
Should I adjust speed or power first?
There is no universal rule for every material. Follow the relevant guide, keep other fields unchanged and adjust one variable at a time.
Can I use cutting settings for engraving?
No. Use the dedicated MCore Fiber vs CO₂ Engraving Settings Guide.
Do I need to change the full preset when switching assist gas?
Yes. Gas-specific presets may also change speed, frequency, focus, nozzle, height, pressure and power.
Can MCore process PVC or unknown vinyl?
Do not process PVC or unknown vinyl because these materials may release hazardous and corrosive fumes.
Related Gweike MCore Guides
Build a verified MCore workflow
Use the parameter hub to find the correct material guide, then use this first-cut workflow to verify the complete preset on scrap before production.
View All MCore Settings View Gweike MCore