Composite Link: 2_2_1 # 5_2_1 (both versions)
This is a model of the composite link 2_21#_5_2_1. There are actually two versions of this composite link, depending on which component of the link 5_2_1 the Hopf link 2_2_1 is attached to. Both are given here.
It is tied in a tube of constant radius, and pulled tight. In the thin version, the tube has been reduced to half-size in order to help you see the crossings. In the thick version, the tube appears at full scale. These are easier to print without as much support material.
For more information about tight knots, see
http://en.wikipedia.org/wiki/Ropelength.
For ropelength data, see
http://www.jasoncantarella.com/wordpress/papers/.
To see a movie of this composite link tightening, visit