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Anyone in CNC land have positive experience with a certain brand of biodegradable coolant?
I'm doing milling, turning, drilling, tapping(cut and form).
I was considering Green Cut Misting and Cutting. (salesman drinks it)
https://www.lubecorp.com/
The goal is to reduce waste without loosing efficiency.
The job I'm on is starting to explore minimum quantity lubrication myself, having stumbled on MQL while trying to find out more about Datron's alcohol-based coolant. I have pretty much the same questions.
Kool Mist is relatively cheap. Its MSDS says it contains Tri-ethanolamine (TEA), ethylene glycol and propylene glycol, which are 'harmful if swallowed' and 'irritant'.
--T.E.A. (says wikipedia) is in sunscreen, laundry detergent, hand sanitizer, shaving cream and paint. It's not good for aquatic species, and mentioned in the UN Chemical Weapons Convention.
--Propylene glycol is the stuff in e-cigarettes that makes it smell sweet. It has a negative effect on the environment if dissolved in water because it reacts with dissolved oxygen, depriving fish.
--Ethylene glycol is basically the main ingredient in antifreeze(!). It is highly toxic but breaks down in the environment in about 10 days.