Canola oil as a coolant ?

[m_c]

I've always used soluble oil, and never had any issues with staining, however I am aware there are some that are notorius for causing residue build up.
One big thing to be aware of is soluble oils can be pretty specific for their applications, and I'm guessing that whatever you have isn't suited for brass (some suppliers classify it as yellow metal).

I'm currently running Gulf Cascade HD-S, as it's capable of handling most metals and processes, however the smallest quantity it's available in is 20 litres. The choice for cutting oils in small quantities is very limited, so you either have to run whatever you can find and hope it works, or buy more than you're ever likely to use.

[Jonathan]

I've always used soluble oil, and never had any issues with staining, however I am aware there are some that are notorius for causing residue build up.
One big thing to be aware of is soluble oils can be pretty specific for their applications, and I'm guessing that whatever you have isn't suited for brass (some suppliers classify it as yellow metal).

+1

I use Castrol Cooledge BI, mainly because I got most of a 20L container cheaply. I've not needed to use it on brass, but it says it's suitable in the datasheet.

[Christian Knuell]

Hi,

rapeseed oil works well if applied directly to the workpiece and removed afterwards. I've used it a few times for cutting stainless steel.
But: I would never put it into a machines coolant system. Fist: it is quite thick - but most important: it will rot and become a total mess after a few months.

Christian

[cropwell]

Yes - I found that out the hard way, fortunately I drained it out before it set.

[EddyCurrent]

It's not the oil I've fancied,
Because the bas$*rd goes all rancid.

(you didn't know I was a poet ! )