LightBurn Start Delay to allow the fan to spool before the job starts

1 min read·Updated Jul 2026
Quick
answer

How to set a LightBurn job start delay (2–8 sec) so the inline fan reaches full speed before cutting begins.

Applies toAll machinesTopicSoftware

Since LightBurn 1.2.00, a function has been added to the device settings in LightBurn to define a time delay for the start and end of a job. Click the wrench/screwdriver icon to open the pop-up Device Settings window. Adjust your start delay to 2–8 sec to give the Thunder in-line fan enough time to spool up to its max speed.

NOTE: Thunder Lasers already has an End Delay built in timer that allows the exhaust fan to run approximately 30 sec after the job to clear out leftover fumes and smoke. This action is done by Thunder's proprietary TL Timer board so the end time should be left at 0.0.
LightBurn Device Settings showing start and end delay fields

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