The selection of a tool with the proper number of flutes for any round tool is important. A two-fluted tool will always have the greatest amount of chip space, and therefore should be the tool of choice in soft materials, or in situations where the tool will be run more than several diameters of itself deep. On the other hand, the two-fluted tool will usually be the weaker tool because of the thinner cross section of web.
Tools with more flutes ( 3,4,6,8,etc) will have a stronger backbone because those flutes are more shallow and provide much more cutting action. This will lead one to use a tool with more than two flutes in harder, tougher materials, or where stronger tools and less chip space are required.
Tools with more flutes ( 3,4,6,8,etc) will have a stronger backbone because those flutes are more shallow and provide much more cutting action. This will lead one to use a tool with more than two flutes in harder, tougher materials, or where stronger tools and less chip space are required.
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