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Leather is one of the most practical materials for custom makers, small businesses, craft studios and product personalization workflows. With the Gweike MCore, leather should be processed with the 80W CO₂ laser head, not the 400W fiber laser head.
In this guide
This guide explains the available MCore leather cutting reference setting, how to choose between High Speed and Best Speed, how different leather materials behave, how to control dark edges and smoke odor, and how to test a new leather sheet before production.
The parameter below is a starting reference, not a guaranteed final setting. Leather varies by thickness, tanning process, oil content, dye, coating, backing material and moisture level. Always test on scrap material before cutting finished products.
Quick Leather Cutting Reference
For Gweike MCore leather cutting, use the 80W CO₂ laser head. The available reference setting is for 2mm leather.
Start at 40 mm/s when edge quality matters. Use 45 mm/s for faster prototype cutting or hidden edges.
| Material | Thickness | MCore Laser Head | High Speed | Best Speed | Power Basis | Lens |
|---|---|---|---|---|---|---|
| Leather | 2mm | CO₂ 80W | 45 mm/s | 40 mm/s | 90% laser power | 50mm focal lens |
For leather thicknesses other than 2mm, use this setting only as a testing reference. Do not assume the same result on thinner, thicker, coated or synthetic leather.
Which MCore Laser Head Should You Use for Leather?
The Gweike MCore combines two laser sources in one desktop machine: a 400W fiber laser and an 80W CO₂ laser. These two laser heads are not interchangeable. Each one is designed for a different material category.
| Material | Correct MCore Laser Head | Why |
|---|---|---|
| Leather | CO₂ 80W | CO₂ is suitable for organic and non-metallic materials. |
| Fabric | CO₂ 80W | Suitable for thin soft materials. |
| Rubber | CO₂ 80W | Suitable for selected non-metal materials after testing. |
| Wood / MDF / plywood | CO₂ 80W | CO₂ wavelength is absorbed by cellulose-based materials. |
| Acrylic | CO₂ 80W | CO₂ is suitable for acrylic cutting and engraving. |
| Stainless steel / carbon steel | Fiber 400W | Fiber laser is for metal cutting. |
| Aluminum / brass | Fiber 400W | Fiber laser couples into metal efficiently. |
MCore 80W CO₂ Leather Cutting Parameter Chart
The available reference data provides a 2mm leather setting. This guide does not invent separate parameters for 1mm, 3mm, 4mm or 5mm leather because those values are not available in the provided reference data.
| Material | Thickness | High Speed | Best Speed | Power Basis | Recommended Lens | Notes |
|---|---|---|---|---|---|---|
| Leather | 2mm | 45 mm/s | 40 mm/s | 90% laser power | 50mm focal lens | Use Best Speed for cleaner visible edges. |
How to use this chart
- Start at 40 mm/s for finished products where edge quality matters.
- Use 45 mm/s for fast testing or non-visible edges.
- Keep the leather flat during cutting.
- Use light to moderate air assist.
- Make sure fume extraction is running before the laser starts.
- Test on scrap material from the same leather batch.
High Speed vs Best Speed for Leather Cutting
The leather reference setting provides two speed choices: High Speed and Best Speed. The difference matters because leather can burn, darken, smell or warp if too much heat stays near the cut line.
| Mode | MCore 80W 2mm Leather Speed | Best Use |
|---|---|---|
| High Speed | 45 mm/s | Quick samples, hidden edges, fast testing. |
| Best Speed | 40 mm/s | Finished products, visible edges, cleaner cut quality. |
When to use High Speed
Use High Speed when you need faster throughput and the edge is not the main visual feature. This may be useful for rough prototypes, internal parts or back-side cuts.
High Speed is closer to the cut-through limit. If the leather is slightly thicker, denser, wetter, coated or not perfectly flat, the cut may not fully separate.
When to use Best Speed
Use Best Speed for most leather products. It gives the laser slightly more time to complete the cut and is a better starting point when the final product will be sold or handled by customers.
Start with 40 mm/s for patches, labels, wallet parts, keychains, bag tags and custom gifts.
Genuine Leather vs PU Leather vs Synthetic Leather
Not all leather behaves the same under a CO₂ laser. The same setting can produce different edge color, smoke odor and cut quality depending on the material type.
Genuine leather
Genuine leather is a natural material. It can vary in thickness, density, moisture content, oil content, dye and tanning process. These differences affect the cut edge and smoke odor.
Use the 2mm reference setting only as a starting point. If the leather is softer, denser, thicker, oily or heavily dyed, run a test cut and adjust gradually.
PU leather
PU leather should be verified before laser cutting. Some synthetic leather materials are laser-safe, but others may contain coatings, adhesives or backing layers that produce strong odor, melting residue or unsafe fumes.
Synthetic leather
Synthetic leather is a broad category. It may include PU coating, textile backing, foam layers, adhesives, vinyl-like surfaces or mixed polymers. Because the structure varies widely, there is no single reliable setting for all synthetic leather.
If it melts heavily, leaves sticky residue, produces sharp odor or creates unusual smoke, stop processing and verify the material composition.
Air Assist and Lens Setup for Leather
Leather cutting needs enough airflow to clear smoke and reduce flare-ups, but too much air can move lightweight leather or overcool the cutting area. The goal is controlled smoke removal, not maximum pressure.
| Setup Item | Recommendation |
|---|---|
| Laser head | CO₂ 80W |
| Lens | 50mm focal lens |
| Air assist | Light to moderate airflow |
| Workholding | Keep leather flat and stable |
| Ventilation | Active fume extraction required |
| Test method | Small scrap test before production |
Lens choice
Use a 50mm focal lens as the starting setup for leather. A shorter focal length concentrates energy near the surface and is more suitable for thin, soft materials such as leather and cloth.
Air assist
Use light to moderate air assist. The airflow should clear smoke from the cut line and help reduce small flare-ups. It should not be so strong that it lifts, wrinkles or moves the leather during cutting.
Ventilation
Leather produces smoke and odor during laser cutting. Always use active fume extraction. Do not cut leather in an enclosed room without ventilation. If the material produces unusually strong, sharp, chemical or irritating fumes, stop cutting and verify the material composition.
How to Reduce Burn Marks and Smoke Odor
Leather can darken at the edge when laser cut. Some edge darkening is normal, but heavy burning, strong odor and sticky residue usually mean the setup needs adjustment or the material is unsuitable.
Start with Best Speed
For 2mm leather, start at 40 mm/s when edge quality matters. This is the safer starting point for finished products because it gives more consistent cut-through than running at the fastest setting.
Keep the leather flat
If leather lifts, curls or shifts during cutting, focus changes across the job. This can cause incomplete cuts, inconsistent edge color and rough outlines.
Use controlled air assist
Air assist should remove smoke from the cut line. If there is too little airflow, smoke can stain the edge and surface. If there is too much airflow, thin leather may move or curl.
Improve fume extraction
Smoke that stays over the material can redeposit on the surface and make the edge look darker. Make sure extraction is active before the laser fires.
- If the edge is too dark, check smoke extraction before changing the parameter.
- If the leather smells sharply chemical, stop and verify the material composition.
- If the edge becomes sticky or plastic-like, the material may contain synthetic coating or backing layers.
- If the cut does not separate, reduce speed gradually and test again.
Leather Projects You Can Make with Gweike MCore
Leather is a strong material category for small businesses because it supports customization, short production runs and higher perceived value. The MCore is especially useful for shops that want to combine leather with acrylic, wood or metal parts in one workflow.
Leather patches
Small, repeatable and easy to personalize with logos, names or decorative shapes.
Product labels
Useful for bags, hats, apparel and packaging when a premium look is needed.
Wallet parts
Repeated outlines, holes and slots can be digitally cut without physical dies.
Keychains
Easy personalized products for small shops, events and gift sellers.
Bag tags
Works well with names, logos and simple custom shapes.
Custom gifts
High perceived value and flexible short-run production.
For more application ideas, see what small businesses can make with Gweike MCore.
How to Test a New Leather Sheet
Because leather varies so much, do not start with a full production file. Use a small test first.
Confirm the material is laser-safe
Before cutting, confirm whether the material is genuine leather, PU leather, synthetic leather or a coated material. If the composition is unknown, do not cut it until the supplier confirms it is suitable for CO₂ laser processing.
Use the CO₂ 80W laser head
Select the CO₂ head on the MCore. Do not use the fiber laser for leather.
Start from the 2mm reference setting
If the material is close to 2mm thick, start with 40 mm/s for cleaner visible edges or 45 mm/s for faster testing.
Cut a small test shape
Use a small square, circle, tag shape or patch outline. The test should include the same type of corner or small feature used in the final product.
Check cut-through and edge quality
Check whether the leather separates cleanly. Look for excessive darkening, sticky residue, melted coating, strong odor or unusual smoke.
Save a material preset
Record leather type, thickness, supplier, speed, power basis, lens, air assist setup and edge quality notes for repeat orders.
Troubleshooting
The leather does not cut through
The most likely causes are speed too high, material thicker than expected, leather not flat, or coating/backing layers that absorb differently. Reduce speed gradually and test again. Also check focus and material flatness.
The edge is too dark
Some darkening is normal, but heavy burning usually means heat or smoke is staying too long near the cut line. Improve fume extraction and air assist first. If the cut still goes through, test a slightly faster speed.
The leather smells too strong
Leather has a natural smoke odor when laser cut, but sharp, chemical or irritating odor may indicate a synthetic coating, adhesive or unsafe material. Stop cutting and verify the material composition.
The edge melts or becomes sticky
This usually indicates synthetic coating, glue or backing material. Genuine leather normally chars rather than melts. If the edge becomes sticky or plastic-like, stop and confirm whether the material is laser-safe.
The leather moves during cutting
Reduce air blast, flatten the sheet and use a suitable hold-down method. Thin leather can shift if air assist is too strong or if the sheet is curled.
Safety Notes for Leather Cutting
Leather cutting requires active supervision. Do not leave the laser unattended while cutting leather or synthetic leather.
- Confirm the material is safe for CO₂ laser processing.
- Use active fume extraction.
- Keep the work area clean.
- Remove small scraps from the bed before cutting.
- Do not stack multiple leather layers unless the process has been tested.
- Keep fire safety equipment accessible.
FAQ
Which MCore laser head should I use for leather?
Use the CO₂ 80W laser head. Leather is an organic, non-metal material, so it should be processed with the CO₂ laser, not the 400W fiber laser.
What speed should I use for 2mm leather on Gweike MCore?
For 2mm leather, use 45 mm/s as the High Speed reference or 40 mm/s as the Best Speed reference. For finished products and visible edges, start with 40 mm/s.
What power should I use for leather cutting?
The available reference data is based on 90% laser power output. Use it as a starting reference and test on scrap material before production.
What lens should I use for leather cutting?
Use a 50mm focal lens as the starting setup for leather and cloth. This lens is suitable for thin, soft materials and concentrates energy near the surface.
Can Gweike MCore cut genuine leather?
Yes, genuine leather can be processed with the MCore CO₂ laser head, but the result depends on leather type, thickness, moisture, dye, oil content and tanning process. Always test first.
Can Gweike MCore cut PU leather?
Only if the PU leather material is confirmed laser-safe. Some synthetic leather or vinyl-like materials may release harmful fumes or leave melted residue. If the composition is unknown, do not cut it.
How do I reduce dark edges on leather?
Start with the Best Speed setting, keep the leather flat, use controlled air assist and make sure smoke extraction is active. If the edge is still too dark and the cut fully separates, test a slightly faster speed.
Why does leather smell when laser cut?
Leather produces smoke and odor because the laser thermally processes organic material. Strong chemical odor may indicate synthetic coating, adhesive or unsafe material. Stop cutting and verify the material if the odor is abnormal.
Can I cut multiple leather layers at once?
Do not use stacked leather as a default production method. Multiple layers can shift, trap smoke, increase odor and create inconsistent edges. Test single-layer cutting first.
What products can I make with leather on MCore?
Common projects include leather patches, product labels, wallet parts, keychains, bag tags, apparel accessories and custom gifts. These are good small-business products because they are easy to personalize and can be produced in short runs.
Need to test leather, acrylic, wood and metal in one workflow?
Gweike MCore combines an 80W CO₂ laser for non-metals with a 400W fiber laser for metals, making it suitable for mixed-material product ideas and small-business production.
View Gweike MCore →