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

Raw thickness (mm)

Raw board thickness in millimeters.

Pass count

Number of planing passes.

Removal per pass (mm)

Thickness removed per pass in millimeters.

Compute the final board thickness after a planned number of planing passes. 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]

Final thickness (mm)

Final board thickness in millimeters.

• 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.

• Box Joint Depth

  Size box-joint fingers from mating board thickness plus deliberate protrusion before flushing.

• Auszugsschienen Laenge

  Longest drawer-slide length that fits a measured cabinet interior depth after reserving a specified rear clearance; choose an available product size no longer than this result.

• Box Joint Finger Width

  Divide board edge width into a specified number of equal-width box-joint fingers.