Thor, or should that be Zeus?

[routercnc]

If I was using a water cooled spindle I would be thinking about fitting one of these; https://www.fernox.com/filters/tf1-compact-filter or similar, they collect all the crap and have a very strong magnet.
Do addatives for central heating work for spindle cooling systems ?

When we replaced our boiler a few years ago we fitted one of those and it works a treat. Traps the black (iron oxide?) which comes off the inside of the steel radiator panels and keeps the boiler matrix clear
But spindle is chrome steel I think and pipe and pump blades are plastic so not sure it Fernox filter would work? The stuff that blocks my spindle is more like salt deposit which I guess comes from the liquid itself. I'm using fancy bottled PC water cooling liquid but may switch to buying distilled water and adding some antifreeze.