Waterbomb tubes with an odd and varying . (a) Rigid foldable range of tubes with ,, and from 5 to 20. The red lines indicate that the tube is in the structural range. (b) Deployment of a tube with ,, and and a card model with identical geometry and . The corresponding folding angles are listed below the deployment sequence. The rigid folding range of the tube is . At the end of rigid folding, the yellow and purple triangular facets hit each other, causing interference in the shaded area. Also see SM Movie S3.