Watching some of the popular demo vides on YouTube of CNC machines in action (on alloy), I noticed that some of them used fluid mix and others not. Understanding now that it's absolutely essential for some metals, like Steel, the key to removing heat is dispersal in the chipping and while a lot of machines rely on gravity, or gas projection, are there any machines that use magnets?

I wonder if large magnetic plates all around the steel block were used to attract flying/lose shavings would it be efficient enough to banish clippings from the surface?

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