# LightBurn: Kerf is incorrect

If you are using LightBurn and having trouble with kerf, **you may be applying kerf compensation in** _**both**_ **Cuttle and LightBurn**, resulting in joints that are too tight!

Make sure that you **turn off LightBurn’s kerf compensation** when using any Cuttle template that has kerf compensation, like our [box templates](https://cuttle.xyz/templates/laser-cut-boxes).

Alternatively, if you prefer using LightBurn’s kerf compensation, then in the Cuttle template you can set the `kerf` parameter to 0, so that Cuttle does not apply any kerf compensation.

## How to turn off or adjust “Kerf offset” in LightBurn

1.  Select the layer you want to adjust. LightBurn will have a kerf offset on a per layer basis.
2.  Double click on the layer to open the **Cut Settings Editor**, and you’ll find the Kerf offset on the **Common** tab. Make sure to set this to 0.
    
    ![](https://content.cuttle.xyz/learn/lightburn-kerf-is-incorrect/b4ccc16c51410377bee2c9c2606f892b03c4fef1c06b51574461dcf5fe71b2e5.gif)
    
    ![](https://cuttle-content.imgix.net/learn/lightburn-kerf-is-incorrect/a95cd318cdcf34084c3d405c958d21b2a421ad2ee4c6266c3a8a3140c73f0491.png?auto=compress,format&q=60&fit=max&w=720&h=720&dpr=2)