FIELD: turning; drilling.
SUBSTANCE: cutting tool (100) is designed for forming a final opening in stack (230) that includes at least two layers and pilot opening (240) having a pilot-opening dimension and extending through at least one of the at least two layers. Cutting tool (100) comprises a shank (120), first portion (112) including first coating (116) and/or first coating (116) and second coating (118), wherein first coating (116) at least partially covers first portion (112). Cutting tool (100) also comprises second portion (114), located between shank (120) and first portion (112), wherein second portion (114) comprises second coating (118), which at least partially covers second portion (114).
EFFECT: higher durability of cutting tool.
20 cl, 15 dwg
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