This is part 1 of a snap-fit puzzle machine. When you turn the knob, it generates fun. This is the deluxe model, there's a smaller version
here. To build it, you'll need:
Two of
these (this part!)
Two of
these
One of
these
Two of
these
And two of
these.
I designed this for the
SME Rapid 2011 trade show. The STL files are available free for use, and the corporate logos shown in the original have been stripped.