Methods of near dry machining (NDM) are becoming a suitable alternative to reduce costs and eliminate, significantly, high amounts of fluid which would be rejected at the end of its life. This work presents a comparison between conventional fluid application (by gravity and high volume ~ 150 liters/hr) and the method of NDM (applying cutting fluid by spray ~ 60 ml/hr). Considering that investigation was carried out by turning a low machinability material like AISI 316 stainless steels, severe cutting temperatures made possible the evaluation of the efficiency of fluid spray in lubrication. Results suggest that only in a few conditions of severe heating, conventional method presented slightly better tool life and, for most of the investigated conditions, method of NDM showed good lubrication in tool-workpiece interface and enough cooling, determining an excellent performance of tool life and integrity of cutting edge.

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