How do you take this one pattern piece:

And make this?

It can’t be easy. Evil Mad Scientist Laboratories took a template from geometric sculptor George Hart and rose to the challenge of building a Frabjous. Even more challenging is what they did next- they posted instructions for putting it together. Assembling the Frabjous is a puzzle that will most surely impress the person you give it to -if you can bear to part with it once it’s done!