# In or out water lines

**URL:** <https://forum.pwncnc.com/t/in-or-out-water-lines/1680>\
**Category:** PwnCNC Spindle System\
**Created:** [June 21, 2024, 4:45pm UTC](https://forum.pwncnc.com/t/in-or-out-water-lines/1680 "2024-06-21T16:45:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jweinpert](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jweinpert](https://forum.pwncnc.com/u/jweinpert)\
**Post date:** [June 21, 2024, 4:45pm UTC](https://forum.pwncnc.com/t/in-or-out-water-lines/1680/1 "2024-06-21T16:45:32Z")

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Does it matter on the 80mm spindle which is the inlet and which is the outlet for the water lines?

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**Author:** ![Daniel](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/daniel/32/65_2.png) [@Daniel](https://forum.pwncnc.com/u/Daniel)\
**Post date:** [June 28, 2024, 10:59am UTC](https://forum.pwncnc.com/t/in-or-out-water-lines/1680/2 "2024-06-28T10:59:35Z")

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Nope… either port on the motor can be in or out since they both lead to a simple cooling chamber inside.