Change of colour:
The bottom bit was over heated. Look into the relation of chip-load (transfers the heat away form the bit)/Bit-Size/Number of Flutes/RPM/Feed-Rate if you get this.
Looking at it today,
/Depth of cut per pass
seems missing above
The bottom bit was over heated. Look into the relation of chip-load (transfers the heat away form the bit)/Bit-Size/Number of Flutes/RPM/Feed-Rate if you get this.
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