Super Spinny - Double Threaded Pencil Case

prusaprinters

<p>This case is made to screw on and off both ways, with a nice looking design. I've seen similar outside patterns on other designs, but I don't think anyone has realized that the rotated double pentagon shape can be used to make double threading.</p><p>To make the inside pattern, extrude a pentagon with a twist one way, then do it again the other way, but make sure that the second extrusion isn't a “join” extrude, make it an “intersect” extrude, so that the shape is only where both pentagons intersect each other. Optionally, make it hollow.</p><p>To make the outside pattern, extrude a pentagon with a twist one way, then do it again the other way, this time as a “join”, so that the two shapes are there overlapping. Make this hollow.</p><p>All aesthetics on the model are incidental, everything you see is to required to make it turn.</p><p>More sizes to come.</p>