Castrol Cooledge Cutting Coolant Suds

[Lee Roberts]

Dont know if anyone is in need of some cutting oil,

i grabed one of these the other day: http://www.ebay.co.uk/itm/Castrol-Co...-/300687792185

They also do a 500ML size bottle if you need more.

Now for my question, on the listing it says:

Recommended Concentration -
.Milling, drilling and turning 3 - 5%
.Sawing 3 - 5%
.Reaming, tapping and Screwing 8%
.Grinding 2 - 5%

3 ? Whats is this you talk about? 5, 8% - percent of what ?

What i was thinking of doing was mixing some up and putting it into a hand spray gun, you know the type you get for misting your house plants with water. The cnc router machine im builing at the momment is going to be for wood work mostly but i figerd having some cutting oil to hand when i do machine some ali up would be better then none, i dont want to mix the lot up though and have it sat there going off ?

So if i said i wanted to mix up 1L at a time, what would be the right amount of cutting oil to water i should mix?