Custom endmill with a hyperbolic cone cut out in the centre?(unless I'm using that term incorrectly)?
I was actually guessing something similar to that (one of my guesses, lol) but I thought the jet/cup idea was being passed over; I was under the impression that it was too cascade like, and the design was different to this.
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Hypocritical Signature I tried to delete: Procooling: where scientific principles are ignored because big corporations are immune to mistakes and oversights.
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