Ok, problems getting a cooling system for the spindle to work.

The chiller I got from AndrewMawson is way too powerful and it blows the piping off when it starts up. So unless I get some form of bypass valve or control valve, its not going to work.

I tried a few pumps from Amazon, typically used for fish tanks, they are all too weak. Looking at PC water cooling kits but they are pricy. Can anyone suggest a pump that will work with 6mm piping?

Thanks