CNC Kalkulator
CNC KalkulatorCalculation

Drill Sizes

Created on · drill-size-lookup

Drill Sizes

Selects a metric drill size from a user-defined diameter series.

Formulas

Dlower = floor(D / grid) · grid; Dupper = ceil(D / grid) · grid

Sources: Dubbel: Mechanical Engineering Handbook, geometric and physical principles.

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