How to create a new material in Library?

[Dodgy_Gadget]

I've tried searching, but I'm not even sure of the terms I should be using, so please help! Inventor 2018

What I am trying to achieve is to create timber materials (e.g. Pine, 45x90mm) that I can then use in frame generator etc. I've created a writeable library, and published a part, but I don't know how to get it to work so that when I add it to an assembly, I get the question about what length I want it. 

Also, how to I get my writeable library and its contents to show up as an option in Frame Generator please?

Thanks for reading.

[JDMather]

Creating a Material Library is an entirely different topic than what you are after.

You need to Author a shape - a Structural Shape.

http://help.autodesk.com/view/INVNTOR/2018/ENU/?guid=GUID-30998A4E-8279-47A7-84A5-009ADD2EC1B7

BTW - A shape can be any material and a material can be any shape.

If you wanted to create a Material Library - you could do that too.

[Dodgy_Gadget]

Ahhh, thanks very much JD, I'll go and have a play now and see if I can sort it 🙂

[Dodgy_Gadget · Accepted solution]

A huge vote of thanks too to John ( jhackney1972 ) who pm'd me a video he made specifically in reply to my question, in which he walked me through the whole process. A really generous response. Thanks again John.