Camera issues, center of camera lines up, edges are off

[jimjam (James)]

This is my setup:

• K40 Laser Cutter
• 160 degree camera from Lightburn store
• Scored no higher than .18 during calibration (had some as low as .07)
• Lasered a 10mm x 10mm square and measured with calipers, came out right about 10mm x 10mm

Performed “Calibrate Camera Lens” and “Calibrate Camera Alignment”.

As you can see from the attached image, the text that is burned does not match the text that is digital.
I calibrated (lens and alignment) 3 different times, each calibration was progressively better, without change in these results.

Any ideas?

[HPRS_ENGRAVING (David Boynton)]

Hello,
Just a suggestion, what happens to your backdrop if you remove the -.03 width that is showing? Those controls are for dialing in the the backdrop to match up what your layer is displaying.
Cheers

[LightBurn (Oz)]

Yes, what David said - Try without the width adjustment. Also make sure you set the focus height first, then do the overlay update.

[jimjam (James)]

I knew that was going to come back as a question the minute that I posted this. It makes no difference really. I just redid the burn and got the following results:

[jimjam (James)]

I also have been trying to use the width, height, x shift and y shift adjustments to make the overlay match the artwork. Which I can do, but then on the next burn and refresh of the overlay, they don’t match again

[gentzleon (Victor Leon)]

I have had this issue ongoing. No solution yet. Maybe the next update will bring us some fixes…

[LightBurn (Oz)]

Are you setting the top of the material to the exact same height as the top of the material you burned the alignment targets onto?

[jimjam (James)]

@LightBurn

exact

I used a piece of cardboard (1/8") to burn my alignment targets, the piece in the image I provided is also 1/8". So, I am under the assumption that they are at the exact same height (the focal length of my beam). Tonight I will double/triple check that these are the very same.