I'm a math teacher and would like a solid of constant diameter created. I don't know how to create 3-d models, but have made a 2-d model which needs to be spun around the red dotted line (see attached). The shape is made with an equilateral triangle and then arcs with a radius the same as the side lengths of the triangle. If anyone is willing to prepare this model so I can order several 3-d printings of this, that would be much appreciated. I would like the side lengths of the triangle to be 1 inch wide.