About this 3D model

The KnotServer site http://www.colab.sfu.ca/KnotPlot/KnotServer/ provides coordinates for the paths of mathematical knots. These are rather low-res so the knots look rather bambooish. Coordinates are also given for straight-line models. This web service http://kitwallace.co.uk/3d/knot.xq generates OpenScad code for a selected knot and form.