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

Start grit

Starting FEPA grit number.

Look up the next three FEPA sandpaper grits following a given starting grit. 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]

Next grits

The resulting next grits returned as a list.

• 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.

• DIN 4556 Desk Height Lookup

  Look up the DIN 4556 standard work height of 680 mm and the adjustment range of height-adjustable desks.

• DIN 68901 Carcase Height Lookup

  Look up the nominal DIN 68901 kitchen carcase height for low, base, and tall size classes.

• DIN 68901 Carcase Depth Lookup

  Look up the nominal DIN 68901 kitchen carcase depth for slim, standard, and deep classes; fronts are typically 50 mm deeper than the carcase.