Autodesk Inventor

[#1]

I'm having trouble finding or creating an 'appearance' that actually looks like glass.  Each of the appearances in the Inventor library and Autodesk libraries are milky and not very transparent at all.  I'd like to find or create a material that is almost 100% clear, but reflects the environment.

The transparency slider scales from 0-100% but the results are more like 0-75%

Inventor Studio looks just as bad.

I've got to believe that it's not impossible to do without Showcase or 3DS Max.  Hopefully I'm doing something wrong.  Has anyone had any luck with this?

[#2]

Just so you know it is going to be hard answering the question without version 2013 is different than 2008 Thru 2012..

[#3]

Yeah. I don't think the drastic change was much of an improvement either.  I got some great results in 2012.  I'm not sure what has gone wrong here.