Can SOMEONE help with this design?

wccrawford

Novice Papercrafter
I've TRIED to design THIS as a model, but both attempts went to the garbage BIN. Can SOMEONE help out?
http://i145.photobucket.com/albums/r218/fosters6220/CIMG2817.jpg
http://i467.photobucket.com/albums/rr35/500atfan/CIMG5839.jpg

I'm having problems designing the inner projector's shape. It is 9 triangular horns put together.

I think if I were designing that inside shape, I wouldn't make 9 3D pieces and glue them together. Instead, I'd make 9 flat pieces with a tab on the outside and a tab on the inside (and possibly a tab at the back) and glue the inner tab from 1 piece to the back of the piece next to it, around in a circle.
 
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