Photo Not Square

[Jamesr (James Shelton)]

Hello,
I re-calibrated my Lightburn camera and did a test on a piece of tile.
I outlined the tile and centered it, drew a smaller square and a circle with cross hairs.
It lasered perfect, I did the same setup with another tile and loaded a picture
And it is skewing off towards the upper left from the bottom, I tensioned all belts.
I am at a bit of a loss

[LightBurn (Oz)]

You haven’t mentioned what machine you have, and it’s not listed in the ‘Machines’ section of your profile, so this is a guess, but a reasonable one:

How do I fix skewed or slanted engraving?

This is an example of a fill followed by a cut around the letter A: [image] The fill is slanted, but the cut appears to be correct. If you have engraving that is slanting to one side, but cuts appear correctly, you likely have your motor pulse step polarity set incorrectly. On Ruida controllers, there’s a setting called ‘PWM Rising Edge Valid’ that you can change for each axis that tells the controller whether the rising edge or falling edge of a step pulse is what the motor driver is lookin…

[Jamesr (James Shelton)]

Sorry Oz, it had been a long day at that point. the machine is a China Blue and White 60 watt Ruida Controller

[Jamesr (James Shelton)]

Thanks, that worked in the machine setup tab in Lightburn.
The tab for the X axis was set to True for the PWM, I set it to False.
Ran the same exact file that was at the laser and it squared up nicely

[LightBurn (Oz)]

If you’re using the same motor drivers on X & Y you should set the PWM flag the same for both. It won’t be as apparent on the Y axis, but it will shift your output a little if the setting is wrong and there are a lot of direction changes in Y.

[Jamesr (James Shelton)]

The Y axis was set to False, thanks for the help