Use this workshop calculation to turn measured dimensions and the selected construction convention into a cut, spacing, fit, or material-planning value.

Target Groove Millimeters (mm)

Required number input.

Lateral Travel Millimeters (mm)

Required number input.

Required parting-tool kerf width to leave a target groove after a known amount of lateral tool travel. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Tool Width Millimeters (mm)

The resulting tool width millimeters returned as a number.

• Nominal dimensions, kerf, moisture movement, hardware clearances, wall squareness, and manufacturer instructions can change the required shop dimension. Measure the actual assembly and test critical joints on scrap before cutting finished material.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Complement the calculated dimension with a physical story stick, dry fit, or full-size layout. Follow the hardware, coating, adhesive, or machine manufacturer's limits where they differ from a rule of thumb.

• Feder Nut Masse 1 3 Regel

  One-third-rule tongue thickness from stock thickness and groove width after a user-selected fitting clearance.

• Inlay Strip Width

  Set inlay-strip cut width from a measured groove width after subtracting a chosen total fit clearance.

• Saw Kerf Loss

  Calculate total stock length removed by a known number of full-width saw cuts and blade kerf width.