Google Sketchup is a fantastic tool to design stuff.
Here are a few examples of things that I designed with Google Sketchup.

6-blades halogen lamp

Lamp: powered on (halogen rs7 150W) and viewed from the right
It is made out of polymethylmethacrylate (PMMA).

Lamp: front view

Lamp: detail of a "blade"

Lamp: all blades with dimensions for cutting

Lamp: powered on (halogen rs7 150W) and viewed from the left

Stainless steel fireplace coverings

Front and back coverings

Front covering

Front view

Rear view

Any question ? fblancp@9online.fr