This piece of garden furniture is probably known to everyone - think, a rocking chair. What about a rocking bench for two people? According to this principle, it is possible to make a rocking chair.. Just for a regular rocking chair you need less details.
The rocking chair is supported by the sidewalls and transverse bars. The slats forming the back and seat will rest on them. For a double rocking bench, the sidewalls must be made three, not two, and the bars and slats should be twice as long. Skids to protect the lower edges of the sidewalls should also be thicker and more solid.