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

Board thickness (mm)

Board thickness of the panel to be joined in millimeters.

Compute the drilling pattern for a 7x50 confirmat connector in chipboard. 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]

Pilot hole diameter (mm)

Confirmat pilot hole diameter in millimeters.

Drilling depth (mm)

Confirmat drilling depth 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.

• Rafix Drilling Pattern

  Look up the Rafix cam diameter, drilling depth, and edge distance for a given connector system.

• Clamex P Drilling Pattern

  Look up the P-System groove depth, 6 mm lever-access hole, and minimum butt-joint and miter material thicknesses for Clamex P-10 and P-14 connectors.

• Minifix 34mm Drilling Pattern

  Look up the fixed Minifix 34 mm drilling pattern for 16, 18, and 19 millimeter panels.