Knot 8-18

Correction - getting my knots knotted. The Lovers knot is knot 8-18

Knot 8-18 is a pretty Celtic knot, also called the Lover's knot
The OpenSCAD code is a slightly edited version of that generated by my OpenSCAD knot page site http://kitwallace.co.uk/3d/knot.xq?knot-number=33. Varying the z component of the vector scaling KScale creates the flattened and 3D versions.

This knot looks very similar to knot 8-19 http://kitwallace.co.uk/3d/knot.xq?knot-number=34 and I initially had them confu