# Cutting oval cirkles and strange cutting

**URL:** <https://community.inventables.com/t/cutting-oval-cirkles-and-strange-cutting/136860>\
**Category:** Troubleshooting\
**Created:** [November 17, 2022, 6:35pm UTC](https://community.inventables.com/t/cutting-oval-cirkles-and-strange-cutting/136860 "2022-11-17T18:35:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![FredrikJohnson](https://avatars.discourse-cdn.com/v4/letter/f/dc4da7/32.png) [@FredrikJohnson](https://community.inventables.com/u/FredrikJohnson)\
**Post date:** [November 17, 2022, 6:35pm UTC](https://community.inventables.com/t/cutting-oval-cirkles-and-strange-cutting/136860/1 "2022-11-17T18:35:51Z")

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My X carve is really frustrating right now ,it has been working ok all the thime , but  
Some weeks Ago itsuddenly stops working ok ,  
The cutting is verk bad , when cutting it cut oval cirkles ,  
!  
If i use 1/8 bit i set the Z too 1 mm  
but when it starts the second turn its not Going in the same spot as the first one ,  
It can bee 1 mm off .  
I have check all nuts so its not loose, and i think them is ok ,

And the machine is pretty stable.

How Will i troubleshoot this issue, its wery frustrating right now?`Preformatted text

 ![image](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/3X/f/2/f21f425b880bd7189b66f8d4387bbc280d67fe09.jpeg)  
 ![image](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/3X/3/1/31831fb26211456467cc9e66a000e2574e5db37b.jpeg)  
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**Author:** ![WayneHall](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/waynehall/32/84646_2.png) [@WayneHall](https://community.inventables.com/u/WayneHall)\
**Post date:** [November 17, 2022, 7:15pm UTC](https://community.inventables.com/t/cutting-oval-cirkles-and-strange-cutting/136860/2 "2022-11-17T19:15:33Z")

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Did you check your belts and make sure they are tensioned correctly? Also make sure the little grubs that hold the pulley tight on the z axes are all in and tight.

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**Author:** ![FredrikJohnson](https://avatars.discourse-cdn.com/v4/letter/f/dc4da7/32.png) [@FredrikJohnson](https://community.inventables.com/u/FredrikJohnson)\
**Post date:** [November 18, 2022, 7:05am UTC](https://community.inventables.com/t/cutting-oval-cirkles-and-strange-cutting/136860/3 "2022-11-18T07:05:36Z")

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Thank you,  
i should go over it more this weekend and look for the belt tension and v vheels.

I saw that one v wheels on the z carriage was a bit on the delrin was broken ,  
but the mowement up and down was ok for my eyes ,  
but could that be a possible reason that the machine not workening probably ?

i have a old shapeoko 2 as i use as a laser engraver right now ,  
i will take a correct V wheel from that and try to se whats happen.