Snapping to baffle or internal face zone
 

Hi,

I'm testing Snappy for meshing this helical mixer vessel:

Attachment 97893

I'm using face zones for the highlighted helix surfaces (no thickness) then adding layers on them. However, my main question is about snapping to helix surface edges: I wonder is it possible to get a smooth snapping on the righmost (see below) curve where block mesh cells are not aligned with the helix edges? I've tried to relax quite a few quality criteria. There is some improvement but there are always some kinks. I suppose this is more of a beauty issue, but still. Here's an example:

Attachment 97894


BR,
Tuomo