Hi all,
I'm just in the process of building my cnc machine. I have bought a 3KW water cooled spindle and been hunting for a solution to cool it. I've seen lots of home-made solutions using PC fans/radiators etc.


I've found a pump on eBay -
80W Water Pump Spindle Motor Water-cooled Circle Pump for CNC Engraving Machine | eBay

I'm worried though because that advert mentions changing the filters etc regularly. I would prefer something with less maintenance.



I was thinking of rigging this up just to a bucket of water but wondered if anyone knows of any pre-built closed loops solutions out there. My cnc machine is going in my attic and I'm concerned about possible leaks and transporting new liquid up there and mess when it comes to cleaning etc.


Can someone point me to a closed loop system with very little maintenance needed. Either a commercially available one or a design for one that I can build myself (ideally something tried and tested).



Thanks for any advice/help on this :-)