Problem etching images

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Problem etching images

Postby courtjester » Tue Jul 05, 2022 9:45 pm

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 174 times

after conversion by the plugin slightly different speed and power setting
squach 75 s 60 p_UCCNC.zip
(1.02 MiB) Downloaded 162 times

DSCN5193.JPG

a squach.JPG
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Re: Problem etching images

Postby cncdrive » Wed Jul 06, 2022 11:14 am

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.
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Re: Problem etching images

Postby courtjester » Thu Jul 07, 2022 2:30 pm

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
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