I imported a CAD drawing of an airplane in 'stl' format into Blender. I left the windows out, because I want to make them clear glass. When I import the window separately, in 'stl' format, I am unable to make them glass & transparent. WFR

  • $\begingroup$ Why can't you change the material properties? Can't you select them or do you get an error message? $\endgroup$ – stacker Mar 26 '14 at 15:43
  • $\begingroup$ Can you upload your blend file so we can take a look? $\endgroup$ – Thom Blair III Mar 26 '14 at 16:58

I just tried it with an STL file, and it works fine for me. Steps I used:
1. File:Import:STL
2. Select file and import
3. Select the newly imported object (right click)
4. In the materials panel, add a new material
5. Check the transparency panel
6. Change alpha slider to desired transparency


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