# Squaring up z-axis

**URL:** <https://community.inventables.com/t/squaring-up-z-axis/49812>\
**Category:** Uncategorized\
**Created:** [January 28, 2018, 1:44am UTC](https://community.inventables.com/t/squaring-up-z-axis/49812 "2018-01-28T01:44:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![TimSilvester](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/timsilvester/32/86249_2.png) [@TimSilvester](https://community.inventables.com/u/TimSilvester)\
**Post date:** [January 28, 2018, 1:44am UTC](https://community.inventables.com/t/squaring-up-z-axis/49812/1 "2018-01-28T01:44:46Z")

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I’m trying to square up my z-axis. Using my try square, I can see I have about a hair of discrepancy between top and bottom of the spindle mount. A slight forward lean of about 0.3 mm. Not much, but a little bit of inaccuracy here, a little bit of inaccuracy there - it all adds up.

The logical adjustment point are the four bolts on either end of the gantry extrusion; loosen bolts + twist extrusion (as far as possible) + retighten did get rid of the worst of the z-axis forward lean, but I still have a little bit more I need to shake.

Do I need to shim the z-axis to get it dead-square, or are there other points of adjustment i’m overlooking?

 ![IMG_3538 (1)](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/3X/1/3/13341e9e7c9163ea357a98303393a377b1f5a4e4.jpg)

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**Author:** ![ChrisRice](https://avatars.discourse-cdn.com/v4/letter/c/e19adc/32.png) [@ChrisRice](https://community.inventables.com/u/ChrisRice)\
**Post date:** [January 28, 2018, 1:48am UTC](https://community.inventables.com/t/squaring-up-z-axis/49812/3 "2018-01-28T01:48:20Z")

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You can shim or drill the holes larger to get more twist. I shimmed. Some have used paper, thin plastic, pop cans. I used feeler guages.

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**Author:** ![TimSilvester](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/timsilvester/32/86249_2.png) [@TimSilvester](https://community.inventables.com/u/TimSilvester)\
**Post date:** [January 28, 2018, 1:55am UTC](https://community.inventables.com/t/squaring-up-z-axis/49812/4 "2018-01-28T01:55:41Z")

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OK. Looks like it’s Dremel time. Knocking off the paint around the holes should provide more than enough adjustment scope.

Thanks for the idea.

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**Author:** ![RayMacke](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/raymacke/32/85452_2.png) [@RayMacke](https://community.inventables.com/u/RayMacke)\
**Post date:** [January 28, 2018, 1:58am UTC](https://community.inventables.com/t/squaring-up-z-axis/49812/5 "2018-01-28T01:58:05Z")

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Here is a link to a discussion about it. There are several more. Try searching for **_tramming_**

> [@\[Resolved\] - Squaring X Carriage Front to Back](https://community.inventables.com/t/resolved-squaring-x-carriage-front-to-back/8945/9):
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> OK, I got it all sorted out smile I spent yesterday pulling most of the machine apart to get the Y plates off. I was able to enlarge one of the lower Y plate mounting holes which gave me the adjustment I needed to square the front piece of Makerslide. Re-assembled it and everything is square now.

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**Author:** ![TimSilvester](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/timsilvester/32/86249_2.png) [@TimSilvester](https://community.inventables.com/u/TimSilvester)\
**Post date:** [January 28, 2018, 2:41am UTC](https://community.inventables.com/t/squaring-up-z-axis/49812/6 "2018-01-28T02:41:25Z")

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Problem solved. Thanks for your help, good sirs. 🙂