# Rotary not behaving as expected (solved: forgot to set a axis parameters)

**URL:** <https://forum.onefinitycnc.com/t/rotary-not-behaving-as-expected-solved-forgot-to-set-a-axis-parameters/34215>\
**Category:** Elite Masso Rotary\
**Created:** [June 30, 2025, 12:52am UTC](https://forum.onefinitycnc.com/t/rotary-not-behaving-as-expected-solved-forgot-to-set-a-axis-parameters/34215 "2025-06-30T00:52:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![FlyRodW](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/flyrodw/32/7989_2.png) [@FlyRodW](https://forum.onefinitycnc.com/u/FlyRodW)\
**Post date:** [June 30, 2025, 12:52am UTC](https://forum.onefinitycnc.com/t/rotary-not-behaving-as-expected-solved-forgot-to-set-a-axis-parameters/34215/1 "2025-06-30T00:52:42Z")

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I’m using a simple rounding toolpath from Vectric, but the results are not at all what I’m expecting. It’s as if every degree that is turned on the A axis is 10x what it is supposed to be. I’m using the OneFinity Masso WrapY2A (inch) post-processor. I’ve tried both MM and inch, but no difference. Suggestions?

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**Author:** ![FlyRodW](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/flyrodw/32/7989_2.png) [@FlyRodW](https://forum.onefinitycnc.com/u/FlyRodW)\
**Post date:** [June 30, 2025, 1:08am UTC](https://forum.onefinitycnc.com/t/rotary-not-behaving-as-expected-solved-forgot-to-set-a-axis-parameters/34215/2 "2025-06-30T01:08:56Z")

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Ok, I think I figured out what it was…leaving this up for others that might have missed it as well. The A axis configuration on the masso was not correct. After setting the values as shown in the user’s guide, it appears to have fixed it. (Page 26 - [https://www.onefinitycnc.com/\_files/ugd/6951b9\_acf9d10553ee4551b95758064b47bbca.pdf](https://www.onefinitycnc.com/_files/ugd/6951b9_acf9d10553ee4551b95758064b47bbca.pdf))