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

Lamella count

Number of lamellae glued edge to edge; at least two.

Target panel width (mm)

Target finished panel width in millimetres.

Compute the growth-ring alternation interval and recommended maximum lamella width for edge-glued panels. 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]

Flip interval

Flip every second lamella so adjacent growth rings alternate.

Recommended max lamella width (mm)

Smaller of the eighty millimetre shop limit and the even panel division.

• 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.

• Biscuit Spacing Rule Calculator

  Recommend a biscuit spacing of 100 mm for panels up to one meter and 150 mm for longer panels.

• Glue Application Rate Lookup

  Look up the recommended glue amount in grams per square metre for one-sided or two-sided application.

• Solid Wood Lamella Width Calculator

  Recommend a solid wood lamella width capped at 80 millimeters for a panel width and lamella count.