Inkscape.org
  1. #1
    Paddy_CAD Paddy_CAD @Paddy_CAD

    Editing the nodes of this knotted path updates all the knots too.

  2. #2
    Paddy_CAD Paddy_CAD @Paddy_CAD
    *

    A few variations, more complex than the first example but built on the same principle. Hopefully the shape names are self explanatory. Use [Objects > Layers and Objects] to reveal them.

    Self Intersection 5