What is the typical clamping pressure range for softwood?

The typical clamping pressure range for softwood is indeed around 125-150 psi. This pressure is suitable for ensuring that the adhesive bonds effectively without causing damage to the wood fibers. Softwoods, such as pine and spruce, are more forgiving under this pressure range due to their lower density and fiber structure compared to hardwoods, which might require different handling.

When clamping wood for bonding, it's crucial to apply enough pressure to achieve good contact between the surfaces being joined while avoiding excessive pressure that could lead to crushing or deformation of the softer wood fibers. This optimal clamping pressure allows for a strong adhesive bond and preserves the integrity of the wood structure, ensuring that the resulting glued joint remains effective for its intended aviation applications.