Donut with a Twist Cushion

This pattern is for the Donut with a Twist aka Buttocktagon, sculptural geometric modern crochet cushion or throw pillow. It produces a fun intriguing mathematical shape with a completely different silhouette depending on the angle. This is a detailed pattern with instructions for every step and links to any necessary stitch tutorials. The smaller version of the pattern (fidget toy) has been tested a group of ~10 randomly chosen testers of different skill levels, and it can indeed be done by all! Crochet terminology: US Recommended hook size: 4.5 to 5.5 Yarn weight: 4 (worsted), or 5 (chunky) Size of the finished object: ~20 cm in width, yet depends on hook size and yarn thickness Skill level: - intermediate, double crochet - working in the round - increases and decreases