Patterns available as Ravelry Downloads

Knitting: Ball, Toys and Hobbies - Other
This is a model for a picornavirus icosahedron. Each triangle is knit in 3 colors, and 5 triangles are sewn together to make a pentagon (aka a pentamer). 12 of these are sewn together to make the virus. Stuff with fiberfill as you sew the last seam.