About this 3D model

This is the plan for a set of pan pipes. The other models found did not take into account that a tube less than 7 times the width of the opening will not make any sound. A 2mm thickness of the pipe will prevent any "leaks". The parametric version allows you to change the notes used. I cheated a little using numbers in inches converted to 10 milimeters each (where a C pipe should be 6 inches long, it's 60mm on this model)