Glue Spread Calculator — Optimal Bond Strength

For standard PVA wood glue, the ideal spread rate is 150-200 g/m² per glue line. This creates a thin, even film that results in the strongest bond. Too little glue starves the joint; too much creates a weak glue line and excessive squeeze-out.

Use a glue roller, brush, or notched trowel for even distribution. For edge joints, apply a thin bead and spread with your finger or a small roller. The surface should look wet but not dripping. Aim for full coverage with no dry spots.

End grain is like a bundle of tiny straws that absorb glue rapidly. Apply a generous first coat, wait 5 minutes for it to soak in, then apply a second coat before assembling. This "sizing" technique prevents a starved joint.