# Accurate Machine Movement on LongMill

**URL:** <https://forum.sienci.com/t/accurate-machine-movement-on-longmill/3590>\
**Category:** Guides & Resources\
**Created:** [September 2, 2021, 8:28pm UTC](https://forum.sienci.com/t/accurate-machine-movement-on-longmill/3590 "2021-09-02T20:28:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kellyz](https://forum.sienci.com/letter_avatar_proxy/v4/letter/k/9fc29f/32.png) [@kellyz](https://forum.sienci.com/u/kellyz)\
**Post date:** [September 2, 2021, 8:28pm UTC](https://forum.sienci.com/t/accurate-machine-movement-on-longmill/3590/1 "2021-09-02T20:28:21Z")

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DIP switches control how much your machine moves by each signal or electrical pulse that the motor drivers receive (ie. microstepping). The control board comes preset with the correct microstepping, however in rare occasions the switches can be jostled and moved.  
If they are not set properly your machine will not move the proper distance, which can cause skewing of the Y-axis and cause inaccurate cutting. You can refer to this article to see how to adjust your DIP switches.

> **[Changing Microstepping - LongMill CNC CNC](https://resources.sienci.com/view/lm-changing-microstepping/)**
>
> How to change microstepping on the LongMill Benchtop CNC to improve accuracy in machine movement. This will cause motors to move more or less per signal.

 ![microstep](https://forum.sienci.com/uploads/default/original/2X/b/b8b3265f7e93cf6bec89818ee29b27128c3edcea.jpeg)