I really do not understand your question. You do not say just unique aspects of your design require strength out of the ordinary.
Most of the "furniture grade" hardwoods have the strength needed for most furniture projects. Woods are primarily selected for the look that the builder wants to achieve. My personal choice for just an "everyday" project would be oak. For an exceptional look I go for black walnut. There are many combinations depending upon what you want the project to look like.
Need sketch of the application to know if your slots will hold up.
George
Most of the "furniture grade" hardwoods have the strength needed for most furniture projects. Woods are primarily selected for the look that the builder wants to achieve. My personal choice for just an "everyday" project would be oak. For an exceptional look I go for black walnut. There are many combinations depending upon what you want the project to look like.
Need sketch of the application to know if your slots will hold up.
George