# 40W laser Cross Hair

**URL:** <https://forum.snapmaker.com/t/40w-laser-cross-hair/39203>\
**Category:** Snapmaker 2.0 (3-in-1)\
**Tags:** Laser, Snapmaker\_Luban\
**Created:** [March 29, 2025, 6:57am UTC](https://forum.snapmaker.com/t/40w-laser-cross-hair/39203 "2025-03-29T06:57:12Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![F1Raptor](https://avatars.discourse-cdn.com/v4/letter/f/91b2a8/32.png) [@F1Raptor](https://forum.snapmaker.com/u/F1Raptor)\
**Post date:** [March 29, 2025, 6:57am UTC](https://forum.snapmaker.com/t/40w-laser-cross-hair/39203/1 "2025-03-29T06:57:13Z")

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Hi, i have updated Luban to 1.15 and the controller to 1.20.  
When i set the cross hairs to the centre of the plate and placed my object there, i set work origin, run boundary and then i start the laser engraving and the picture is not aligned to the centre.

I read up on the net that the offset of the laser to the cross hairs is Y-21. Not sure this is right as the laser is inline with the cross hairs on the x axis. I offset the x axis by -21 and now it engraves to the centre as required.

Why doesnt the luban software already allow for this?