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mclark3617
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You will almost never have to use a coolant pump with just light cutting, a spray bottle will work fine if needed.
If you plan on really working a chunk of tool steal or high carbon steel then it may come in handy, like with a turbo mill.
Also with stainless, remember with stainless heat is not good, it will make the metAl warp and bend all over the place. Keep stainless as cool as possible.
They have books on what coolants work best with what steels, but that is only a consern with high production

mclark3617Reply To: practice milling