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Calculators

• Steps per mm calculator

  Steps/mm and steps/° for leadscrews, belts and rack & pinion. Outputs GRBL and Marlin config lines.

• Feeds & speeds calculator

  Spindle RPM and feed rate from surface speed, tool diameter and chip load. Metric and imperial.

• Belt tension calculator

  Tension GT2 and GT3 timing belts by plucking the span and measuring the resonant frequency.

• Lathe RPM calculator

  Optimal spindle speed for turning from workpiece diameter, material and tool type (HSS or carbide).

• Lathe motor power calculator

  How much motor power a turning job needs. Kienzle specific cutting force method with drive efficiency.

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