Thanks for the input Brynn, I've found that filling in the whole shape as one selection is causing the white 'holes', when tried with both of the 2 heart icons. However, I get the effect I'm looking for if i click the 'Fill bounded areas' icon in the bottom left hand corner and colour each part of t...

I'm trying to create a celtic knot effect, with the traditional 'over and under' effect. I drew the outside line as one path, and the inside line as another path. I used the exclusion tool as it seemed to show all the intersecting nodes, not just the nodes I used to create the paths. I then deleted ...