# Bed seems to be not flat...

**URL:** <https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163>\
**Category:** Hardware\
**Created:** [January 20, 2015, 6:20pm UTC](https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163 "2015-01-20T18:20:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![reduck](https://avatars.discourse-cdn.com/v4/letter/r/8baadc/32.png) [@reduck](https://forum.lulzbot.com/u/reduck)\
**Post date:** [January 20, 2015, 6:20pm UTC](https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163/1 "2015-01-20T18:20:30Z")

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Hi everyone,

I have a big issue with my printbed since it seems to be not flat… I mean, I calibrated the whole day the 4 corners and all are at the same height (same feeling when I apply force on a paper sheet ) but the force increase when I travel from one corner to another to reach the maximum in the middle.

I have really no idea how this can be possible and all the parts I try to print need to be scrapped since the printbed is higher in the middle and decrease height when approaching corners.

I thought that I was perhaps applying too much pressure on the springs but even when I remove any pressure on the corners, the problem is the same.

If anyone of you has any idea, this would help me a lot !

Thank you

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**Author:** ![edlink](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/edlink/32/29_2.png) [@edlink](https://forum.lulzbot.com/u/edlink)\
**Post date:** [January 20, 2015, 6:34pm UTC](https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163/2 "2015-01-20T18:34:39Z")

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There are about a dozen threads on this already.  
Please search around.

The issue is the bars that the extruder head travels along for the x-axis droop under the weight of the extruder.  
The bed is flat and level. The x-axis bars bend.

Everybody’s TAZ does this. You are not alone.

Level the four corners. Set the z-axis height in the center of x and y, then just print away.

Happy Printing.

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**Author:** ![reduck](https://avatars.discourse-cdn.com/v4/letter/r/8baadc/32.png) [@reduck](https://forum.lulzbot.com/u/reduck)\
**Post date:** [January 20, 2015, 7:26pm UTC](https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163/3 "2015-01-20T19:26:35Z")

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Dear Edlink,

Thank you a lot for your answer that helped me a lot. This make sense! But it should be possible to avoid this therefore for instance by rotating the bars to 90°. I found the topic, thanks! I will read it!

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**Author:** ![vitormhenrique](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/vitormhenrique/32/9222_2.png) [@vitormhenrique](https://forum.lulzbot.com/u/vitormhenrique)\
**Post date:** [January 20, 2015, 10:11pm UTC](https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163/4 "2015-01-20T22:11:22Z")

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> [@reduck](#):
>
> Dear Edlink,
> 
> Thank you a lot for your answer that helped me a lot. This make sense! But it should be possible to avoid this therefore for instance by rotating the bars to 90°. I found the topic, thanks! I will read it!

reduck, can you link the other thread that you found information pertinent to this discussion?

Thanks!

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**Author:** ![reduck](https://avatars.discourse-cdn.com/v4/letter/r/8baadc/32.png) [@reduck](https://forum.lulzbot.com/u/reduck)\
**Post date:** [January 20, 2015, 11:17pm UTC](https://forum.lulzbot.com/t/bed-seems-to-be-not-flat/1163/5 "2015-01-20T23:17:18Z")

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> [@vitormhenrique](#):
>
> > [@reduck](#):
> >
> > Dear Edlink,
> > 
> > Thank you a lot for your answer that helped me a lot. This make sense! But it should be possible to avoid this therefore for instance by rotating the bars to 90°. I found the topic, thanks! I will read it!
> 
> reduck, can you link the other thread that you found information pertinent to this discussion?
> 
> Thanks!

> [@Show off your Printer and Printing station!](https://forum.lulzbot.com/t/show-off-your-printer-and-printing-station/48/1):
>
> Show us what your printing station looks like! [image] This is how it all looked about 6 minutes after delivery! [image] Everything set up about 30 minutes after delivery! [image] Added a custom clip-on webcam mount for my LifeCam Studio!

If link does not work, search “linear bearing backlash, big X axis issues”
