PTC Creo - Design optimsation

[TimBrotherhood]

PTC Creo has very powerful analysis tools and optimisation/feasibility studies.  Put these two together and it's possible to modify 3D models to achieve a desired goal, This family of water bottles was created using these techniques.

The bottles shown here are 1 litre, 500ml and 330ml with the same neck so that the same cap can be used on all sizes. The attached zip has these Creo models and "How-to" instructions.

Note: the models were created using Creo 2.0 Academic Edition. The instructions should enable those not able to open the models to create their own. 

[JonathanHodgson]

Why are you using an Optimization Study to minimise the value of Volume whilst respecting the constraint that Volume = a fixed value?  This seems redundant.

Is this different to (better than) a Feasibility Study with the same constraint?

I'm currently working on a task which involves a similar aim of iterating to achieve target values exactly, so any clarification would be very useful!