Star Penholder

12 pointed star pen holder. I designed this in Solidworks. It's two hexagons shifted 45 degrees and then extruded with loft to the same sketch shifted again half the distance between points. The interior circumference is 75mm and the overall height is 100mm.

It takes about 5 hours to print at 0.2 layers, 20% infill, and 3 wall thickness.