Lumbertool Calculate board feet

Woodturning and CNC

Check segment layout and entered machining arithmetic.

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  • Segmented turning ring layout

    Calculate end miter setting and inner/outer chords for a segmented turning ring.

    Inputs: Outer radius to segment vertices (in), Inner radius to segment vertices (in), Equal segments in ring (segments).

    Results: End miter setting from square cut (degrees), Outer chord length per segment (in), Inner chord length per segment (in).

    Prepare woodturning segments
    Formula and example included

  • CNC feed rate from chipload

    Calculate the arithmetic feed rate implied by a user-supplied chipload and cutter setup.

    Inputs: Spindle speed (RPM), Cutting edges/flutes (flutes), Chosen chipload per tooth (in/tooth).

    Results: Calculated feed rate (in/min).

    Check machining arithmetic
    Formula and example included