How is aircraft plywood prepared for compound bends?

To prepare aircraft plywood for compound bends, the process of soaking it in hot water is effective because it helps increase the pliability of the wood fibers. When plywood is soaked, the water penetrates the adhesive that binds the layers of veneer together, allowing the wood to soften and become more flexible. This flexibility is essential in achieving the desired shape during bending, especially for complex or intricate curves that are often required in aviation components.

Soaking in hot water can minimize the risk of cracking or breaking that might occur during the bending process, making it a preferred method for preparing plywood for applications that require shaping. This method also ensures that the integrity of the plywood remains intact while allowing for the necessary manipulation without compromising its structural qualities.

While other methods like heating in an oven or using steam can also be effective, they may not be as commonly used for the precise control needed in aircraft applications. However, cutting to shape without treatment would not adequately prepare the plywood for the stresses involved in compound bending.