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Originally Posted by gmat
Cutting oil doesnt prevent at all microbial / algae build up. Actually it seems it's a good place for nasties do develop, i dont remember if it's microbial or algae but they're responsible of respiratory illnesses for those who work around CNCs and such.
Also it wont really prevent galvanic corrosion, its main characteristics are related to lubrication and heat soak in high temperature / high mechanical constraints environments.
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Respiratory illness could be associated with the diesel in it. It gives me a headache.
For nasties to develop, well I am confused here due to mix comments. According to me: It should not be a haven for nasties. Since CNC uses same cutting oil even years (Synthetic ones). They just filer impurites out I guess.
I am looking for quality cutting oil, maybe use Gulf Cutting Oil
www.gulflubricants.co.uk
I wish I could pass you the specs of this oil. Yet again, first let me check locally what we have.