does polyfill just put caps on the end of geometry? or does it fill the internal space?

[Jmg07 0]

Hi. I can't figure out how to generate the internal geometry of a tube - I feel like it should be pretty simple but can't make it work - I want to use this geometry for a flip simulation. 

The tube has been generated from a sweep node and then polyextruding. I thought polyfill might be what i'm after but that seems to just fill up the end caps of the tube and not the internal dimensions.

I did try and use isooffset which did generate a volume but then made things a bit more complicated when using the shelf tools.

Thx

 

 

[anim 1,192]

on Poly Extrude check Output Back