# 2.2 water cooled spindle

**URL:** https://forum.pwncnc.com/t/2-2-water-cooled-spindle/2587
**Category:** Spindles and ATCs
**Created:** [January 20, 2025, 1:36pm UTC](https://forum.pwncnc.com/t/2-2-water-cooled-spindle/2587 "2025-01-20T13:36:44Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Thomas](https://avatars.discourse-cdn.com/v4/letter/t/e36b37/32.png) [@Thomas](https://forum.pwncnc.com/u/Thomas)
#### Post date: [January 20, 2025, 1:36pm UTC](https://forum.pwncnc.com/t/2-2-water-cooled-spindle/2587/1 "2025-01-20T13:36:44Z")

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i cant get my atc spindel to hook up my collets, i checked air and am with pressure range ?

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### Author: ![Eriz](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/eriz/32/540_2.png) [@Eriz](https://forum.pwncnc.com/u/Eriz)
#### Post date: [January 21, 2025, 2:22am UTC](https://forum.pwncnc.com/t/2-2-water-cooled-spindle/2587/2 "2025-01-21T02:22:19Z")

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Hi @Thomas, do you mean you can’t get the spindle to grab our tool holders? I wonder if the following support article would be of any help?  
[https://support.pwncnc.com/kb/article/443-clamp-locked-shut/](https://support.pwncnc.com/kb/article/443-clamp-locked-shut/)

The following article says at least 95 psi must be provided.  
[https://support.pwncnc.com/kb/article/406-air-compressor/](https://support.pwncnc.com/kb/article/406-air-compressor/)

Are you using the MTC button to try to load a tool holder?  
[https://support.pwncnc.com/kb/article/469-mtc-button-not-working/](https://support.pwncnc.com/kb/article/469-mtc-button-not-working/)