Your Laser Power/Speed Test Grid, Kerf Test &
Generate a laser power-and-speed test grid as GRBL G-code (diode or CO2), a kerf and slot-fit test as SVG/DXF, and check a material safety guide of what you.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
A 5×5 grid from 20% to 100% power and 1,000 to 6,000 mm/min with 10 mm squares and 3 mm gaps covers 62 × 62 mm; engraving at 0.1 mm line interval takes about 10 minutes.Open the Laser Power/Speed Test Grid, Kerf Test &
Illustration. Open the tool for the real thing.
What is the Laser Power/Speed Test Grid, Kerf Test &?
Every laser, material and lens combination needs its own power and speed — and the fastest way to find them is a test grid. This generator creates a matrix of squares in which each row has a different power and each column a different speed, as ready-to-run GRBL G-code (M4 dynamic or M3 constant power, with your spindle maximum) for engraving or for cutting, plus an SVG for LightBurn-style layers. You choose the power and speed ranges, the number of steps, the square size and the line interval.
A second tab produces a kerf and fit test: a plate with slots stepped around your material thickness and a row of 10 mm squares, as SVG or DXF, so you can measure your real kerf and find the slot width that fits snugly — the number you need for box and finger-joint generators. The third tab is a materials safety table covering woods, acrylic, leather, rubber and metals — and the plastics you must never laser, such as PVC, polycarbonate and ABS.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
GRBL G-code for engrave or cut, M4 or M3, with unit and S-max options.
Each cell on its own layer for LightBurn-style software.
SVG or DXF with stepped slots and measuring squares.
Which materials are safe, caution or never to laser.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This maker tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Does it work with LightBurn?
Use the SVG for layers; the G-code is for GRBL controllers directly.
What is dynamic mode M4?
Power follows the speed — better for engraving corners.
How do I measure kerf?
Cut the 10 mm squares and measure them with calipers.
Is it safe to laser plywood?
Laser-grade plywood is usually fine with extraction; check the glue.
How do I use the Laser Power/Speed Test Grid, Kerf Test &?
1. Set power and speed ranges and the number of rows and columns. 2. Download the G-code and run it on scrap with the origin at the lower left. 3. Pick the best square and note its power and speed. 4. Use the kerf tab to measure the beam width and fit.
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Generate GRBL G-code test grids, kerf/fit test files and read which materials are safe to. Free to use.
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