image distorted

[ronisegoly]

I used Photoshop to convert a profile image to sketch, and then tried to engrave it using lasergrbl
I attach the original sketch, the Gcode crated by the SW (quick save) and partial results.
I used 1BIT dithering and also line to line
The image is distorted at same point, but on SW screen it looks OK
Any clue why the result is distorted?
https://www.dropbox.com/s/xxjzbdubdfthrz6/IMG-20201211-WA0000.jpg?dl=0
https://www.dropbox.com/s/epr9mc9steg31hp/IMG-20201211-WA0000.nc?dl=0

[arkypita]

http://lasergrbl.com/faq/
section: Inaccurate results and misalignments

[DevEvV]

Perhaps the Y-axis motor shaft is sliding in the pulley.

[ronisegoly]

Very strange behaviour I engrave a lot with this machine so I'm quite used to it, and do not see technical issues. The issue I see is with some similar files, other not get distorted. Also the distortion is always at the same point even if I crop the image, and only if the engraving is done vertically. I will keep watching *Roni Segoly * *+972-54-6466264* * <http://en.wikipedia.org/wiki/Mohandas_Karamchand_Gandhi>*

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On Sat, Feb 20, 2021 at 4:54 PM DevEvV ***@***.***> wrote: Perhaps the Y-axis motor shaft is sliding in the pulley. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1345 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABIPCJLKBUNZDHWRSD66RVTS77EI5ANCNFSM4X54FFNA> .