Back in geometry class we used to draw these on paper. I could never remember what they were actually called, but I think they went by "string art". (That’s what came up in a search too)
Basically the Idea is making a curve with straight lines. Usually it's done on paper or 'stitched' onto cardboard. The plan for this one was to make a 3D version that I could hang on the wall or display on my desk. I think it turned out awesome, so I hope you like it and I can get more people to try it also.