Kerf Test Generator
Enter your board thickness — anywhere from 1mm to 20mm — and pick a joint template: Finger Joint, Tab & Slot, or Cross Joint. Set a kerf offset range with a start value and a step, and the generator engraves every tested offset onto the piece, so you cut once and read off the exact value that fits before touching your good material.
How to Test Kerf for Your Laser Cutter
Kerf Tests Tuned to Any Board Thickness
Skip the fixed PDF that only works for one sheet size. Set any thickness from 1mm to 20mm and the generator rebuilds the test grid to match — basswood, MDF, acrylic, leather, whatever's actually on your bed. Switch from 1/8" basswood to 3mm MDF or acrylic and the pattern updates with it, so you're never stuck testing against a chart made for someone else's material.
Built-In Templates for Finger Joint, Tab & Slot, and Cross Joint
Pick Finger Joint, Tab & Slot, or Cross Joint, then set a kerf offset range with a start value and a step. The generator engraves every tested offset directly onto the piece, so one cut compares the whole range — no more guessing one gap at a time and hoping it's close.
One Test Pattern, Ready to Cut — No Rework
Export the moment your parameters are set. The file comes out laser-ready, so you can drop it straight into your cutting software and run it on a scrap offcut without editing paths, resizing shapes, or cleaning up strays. Read the result, note the winning kerf value, and move straight to your real project.
Switch Materials Without Wasting a Sheet
Changing from 1/8" basswood to 3mm MDF, or moving up to acrylic for a new order, used to mean cutting through a full sheet before finding the right offset. Generate a fresh test pattern for the new material in seconds, cut it on an offcut, and lock in your kerf value before you touch the material you're actually charging a customer for.
Built for Every Maker Dialing In a New Material
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