LONGER Ray5 20W Settings for Denim
Recommended speed, power, and pass settings for denim on the LONGER Ray5 20W (20W diode laser, 445nm wavelength, 375×375mm work area). The LONGER Ray5 20W is a compact 20W diode laser with a touch-screen interface and solid cutting performance.
The LONGER Ray5 20W is a 20W diode laser with a 375×375mm work area. Denim can be precisely cut and engraved with a laser, creating custom patterns, fading effects, and clean sealed edges. Below you will find tested starting parameters for cutting and engraving denim on this machine.
Cutting Settings
| Thickness | Speed (mm/s) | Power (%) | Passes | Notes |
|---|---|---|---|---|
| 1mm | 380 | 55% | 1 | 100% cotton denim only -- avoid synthetic blends |
Engraving Settings
| Thickness | Speed (mm/s) | Power (%) | Passes | Notes |
|---|---|---|---|---|
| — | 3800 | 20% | 1 | — |
How to Set Up Denim on the LONGER Ray5 20W
- 1Secure your denim flat on the work bed using clamps, magnets, or a honeycomb pin set to prevent movement during the job.
- 2Set your focus distance accurately — use the auto-focus probe if your machine has one, or measure manually with the focus gauge.
- 3Keep a fire extinguisher or spray bottle nearby. Denim is flammable — never leave the machine unattended while cutting this material.
- 4Enable air assist if available. A steady stream of air at the cut point removes debris, reduces charring, and helps prevent flare-ups.
- 5Enter the speed, power, and pass count from the settings table above into LightBurn. Use the “Cut” or “Engrave” layer settings panel.
- 6Run a small test cut or engrave on a scrap piece of denim before committing to your final project piece. Adjust power up or down by 5–10% based on results.
What to Expect When Lasering Denim
Laser cutting denim seals the edges to prevent fraying, which is a significant advantage over traditional cutting methods. Engraving denim creates a faded, distressed look by burning away the surface dye layer to reveal lighter fibers underneath — this technique is widely used for custom jeans and patches. Expect a slight smoky smell during processing.
Common Mistakes to Avoid
- ✗Running at full power on the first attempt — always start with a test piece at the recommended settings and adjust incrementally. Going straight to maximum power risks burning through the material or causing fire.
- ✗Not accounting for the slower cutting speed of diode lasers compared to CO2. Diode lasers need multiple passes for thicker materials — be patient and let the machine do multiple passes rather than increasing power beyond recommended levels.
- ✗Leaving the machine unattended — denim can smolder or ignite, especially thinner denim or when engraving at higher power settings.
- ✗Engraving over seams or rivets — thick seams change the focus distance and rivets can reflect the laser beam.
Tips for Denim on Laser Machines
- ✓Low power engraving on denim creates a trendy bleached or faded look without cutting through.
- ✓Pin or tape denim flat to the honeycomb bed to prevent movement and wrinkling.
- ✓Test on a scrap piece first -- denim weight and weave vary significantly between brands.
- ✓For patches, cut slightly oversized and fold edges under before sewing.
- ✓Wash denim before lasering to remove sizing chemicals that can affect cut quality.
Frequently Asked Questions
What speed and power should I use for denim on the LONGER Ray5 20W?
Can the LONGER Ray5 20W cut denim?
Can the LONGER Ray5 20W engrave denim?
Other Materials for LONGER Ray5 20W
Denim Settings for Other Machines
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