Problem etching images

[courtjester]

I am having a problem with image etching, which is frustrating me. I an using 1.2115 with a UC400ETH with the Lightburn plugin. I am creating a gcode with lightburn 1.2 using GRBL-m3 which I save as a gcode or NC file format then converting it in UCCNC using the lightburn plug in. Now if I do this with a line or fill mode it turns out fine, but in image mode the etching has lots of streaking and the subject is blurry. The attached image shows a fill on the bottom and 2 partial etchings of a cartoon squatch after a few minutes of etching. I have changed the power and speed settings with no effect as shown in the attached image on white tile. Attached is a .ZIP file of the gcode from lightburn without conversion

squach 80s70p.zip

(606.25 KiB) Downloaded 247 times

after conversion by the plugin slightly different speed and power setting

squach 75 s 60 p_UCCNC.zip

(1.02 MiB) Downloaded 208 times

[cncdrive]

You probably have a mechanical backlash on the X axis.
Try to set some small backlash compensation for that axis to see if it makes any difference.

[courtjester]

I have setup a Metric profile and was able to use the Laser etching (non-Lightburn one) with some success and will test more when time allows. thanks