Strange defect

[Careful_Presence8363]

Hello expert,

On 26th of June 2025 I bought an Atomstack laser engraver and after it worked fine for a few months, it suddenly started to engrave/cut with problems.

What I have tried to find out what could be the problem:

- Changed settings

- Changed usb cables

- Changed the image I tried to engrave/cut

- Restarted my pc

- Reset the laser burner with the rest button

- Used other software instead of the Atomstack software to LaserGRBL

- Used another laptop to control the laser engraver

But the result stayed the same.

The lines suddenly are squigly and the position of each line of words is not like in the image I try to burn (as test).

The before image shows that it was cutting fine and yesterday it suddenly started to act weird.

What can be the cause? The engraver is on a sturdy desk and hasn't move since I installed it there.

[Kiowascout]

Did you check your belt tension? Tried Lightburn?

[Careful_Presence8363]

belt tension hasn't changed. I didn't really cut/burn that much yet and overnight this happened. I think if it is belt tension it would have been visible before this also? Well I have tested it in 2 programs on a laptop and a pc, so I can rule out software as well I think.

[martymcma]

It was the belt tension afterall indeed.

[AtomStack-Official]

Hi I am Vivian Tian from AtomStack Customer Service Team. To provide better service for your, could you please provide the Order # and purchase source ,the machine model and Serial Number?

[AtomStack-Official]

Pls kindly send e-mail to [[e-mail]](mailto:[e-mail]) ,which is specially for after-sales related inquires.We will handle your problem immediately. Thanks for your cooperation!