# Lithopane issues random marks

**URL:** https://forum.makewithtech.com/t/lithopane-issues-random-marks/7151
**Category:** General
**Created:** [March 22, 2023, 11:20am UTC](https://forum.makewithtech.com/t/lithopane-issues-random-marks/7151 "2023-03-22T11:20:29Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Dieselbomber90](https://avatars.discourse-cdn.com/v4/letter/d/5daacb/32.png) [@Dieselbomber90](https://forum.makewithtech.com/u/Dieselbomber90)
#### Post date: [March 22, 2023, 11:20am UTC](https://forum.makewithtech.com/t/lithopane-issues-random-marks/7151/1 "2023-03-22T11:20:29Z")

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![FB_IMG_1679443629959](https://canada1.discourse-cdn.com/flex035/uploads/makewithtech/original/2X/8/842cc3ae0b2f2708ff41548931e164082e8f8817.jpeg)

Doesn’t do it all the time just some images hatchbox pla bambu x1c iv tried various minimum and maximum thickness. Zseam is set to back corner.

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### Author: ![irvshapiro](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.makewithtech.com/irvshapiro/32/2144_2.png) [@irvshapiro](https://forum.makewithtech.com/u/irvshapiro)
#### Post date: [March 27, 2023, 3:02pm UTC](https://forum.makewithtech.com/t/lithopane-issues-random-marks/7151/2 "2023-03-27T15:02:57Z")

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While these marks do have the look of a z seam since I think I saw multiple marks on the same line this is unlikely.

This may just be an extrusion issues. Have you tried printing a solid test image, in the same orientation, to see if you still get the marks?