Thanks for the reply.
I have been using iparts/iassemblies on alot of my components and they have worked very well. But the situation with this part is that i would like to include it in an assembly that is fully parametric and can be changed to any size height/width/depth. On some of the parts like this one where the dims are fully driven by the parent assembly i would like to put in a set of rules (for example one of the rules tells the component to place a hole in the middle when the width dim exceeds 1500mm). And this feature that im trying to unsuppress when the material is polyprop is just another rule as i would like the opportunity to change the material of the component when placed in the assembly.
Here is a post i was just writing which may explain where im trying to get to a little bit better.
I have recently started a new job with a company that has all of their drawings/assemblies in AutoCad 2d. They would now like everything in 3d.
They manufacture fume cupboards for schools, which a product range of about 5 or 6, all coming in about 4 different standard size variations.
I am trying to create parametric assemblies of these cupboards which are all driven by an invisible central block, so that all i have to do is change the size of the block and the assembly will re-size.
My aim is to create a fully parametric adjustable size master assembly of each product range - so that when a customer requires a cupboard in a specific size that is non standard i can copy the assembly to make a unique version and change the sizes using the invisible central block i mentioned. Obviously some of the dimensions of the individual parts that make up the assembly would have now changed to reflect the parametrics on the parent assembly and on some of the projects the materials of certian parts will need to change.
I have created a drawing with every part or sub assembly so that if there is a change in dimensions of material then i can simply open the related drawing and update it. This will then be published in PDF format to show a drawing of the affected part so this can be sent for manufacture as a bespoke part.
I hope this sort of makes sense!? 