Quote Originally Posted by Chaz View Post
Too late. There was some crap and smelt like rusty water. I dont think it was water from me, perhaps when it was tested, not sure.
My 1.5kW spindle blocks every few months or so. I have to drain it and gently use an airline at work (hands loosely cupped around inlet so the pressure is low) to clear any deposits. I think the channels inside are pretty small as it has always had a level of resistance when you blow into it with your mouth so it does not take much to block it

I use water designed for PC cooling circuits to reduce corrosion but it does still block eventually

I'm thinking of different ways of doing the WC on the new machine under construction. Maybe a filter and maybe pumps / valves arranged so the water is emptied back into the reservoir at the end of a session leaving the spindle dry. Someone will probably tell me that it will be worse if it dries out . . .