Hi BurrMan,
In your animation (Inventor?), your opposite screw seems one "mirror"?
My first tests with collision produce very surprising results. ("Flying bottle")
You need to pay a lot of attention when creating the screws and the intersect object.
My work does not leave me very little time to work on it "bottle feed screw" but really an interesting topic.
Thank all for that.

Hi Barry,
For provide one simulation with collision in real time, it's possible to use Simlab Mechanical (21day free trial).
The results are of good quality;
http://www.simlab-soft.com/3d-products/simlab-composer-mechanical.aspx
Best regards.
Nicolas.

Hi Barry,
Thanks for the breakdown. That will help me alot!
The animation is simlab. They have a simulation workbench, but i wont move there until i get the setup correct.

@nico

"My screw is malformed".... Yes!

Hey Nico,
""""My first test produces a flying bottle"""""

Have you made you plug a little bigger than your bottle?

I dont think 2 objects the same size would work in a proper sim environment...

Hi,
this is the result of lofting the facet edges to produce the scrolls.I reduced number of facets to 40 per coil
and made sure the seams of the bottle and the Can where not part of the subtraction as this ends up with
the facet edges in sections.
Thanks to Brian for the help with the node editor I've got it working with the quartz node so now I can run
the animation automatically without moving a slider.
Cheers
Barry