Mike,
As Dave describes an inheritance of an inheritance can be accomplished.
However, if your goal is to have one source (your volume) and then drive the
derivatives you may want to look at passing a parameter or two and create
relations in your derivatives. Here is an example workflow:
1. Build Volume and add parameters in it for your bladder thickness and
tank thickness (eg. BLADDER_THK & TANK_THK)
2. Create the bladder as you described but build in the relation to the
volume. The syntax is: <shell dim=" value="> = BLADDER_TH>:IID_##
(<param_name>:IID_<inherited feature=" id=">)
3. Create the tank the same as the bladder but instead of creating a
shell copy all solid surfaces
a. Offset the solid surfaces by the bladder thickness
b. Select the offset surface and Solidify
4. Shell the part and set the thickness to the tank thickness.
TANK_THK:IID_##
Hope that is enough to help,
Tim McLellan
Mobius Innovation and Development, Inc.
