Deionized water for laser cooling

[CNCPete]

Do you mean antifreeze when you say radiator fluid.I got a bottle of this stuff in the picture. would this stuff be ok.

[CNCPete]

http://hpclaser.co.uk/index.php?main...products_id=79

something like this would be better i suppose

[komatias]

Do you mean antifreeze when you say radiator fluid.I got a bottle of this stuff in the picture. would this stuff be ok.

This is fine. I use cheap halfords type stuff. Change it every 6 months but should be good for a year or longer depending on use. Make sure you have a large quantity of water if you are running for a long time.