We'll need your design for the giant crossbow.

And isn't it that strange moment when you publish your design?

What are the intentions that you bring to bear when you're designing something?

So if you put it in the front door, your design fails.

If you put it in the front door, your design fails.

Well, of course we wouldn't alter your plans in any way.

It's the ingenuity of your plans that sold us on the building.

It is a very long, linear molecule, a coded version of how to make another copy of you. It's your blueprint.

It is a very long, linear molecule, a coded version of how to make another copy of you.

So we want to preserve your beautiful design but just soften it with a touch of classical dignity.

And then whatever you design virtually, you click the button and it shows up at your doorstep a week later.

You take a milk bottle from your refrigerator, and you shred that along with the other plastic, you scale up your design 0.01 to be the next sized foot, and you reprint the shoe.

After we were pretty much convinced we had a good design, and we'd have to make all the standard engineering trade offs you always make you can always get three out of four of anything you want the weight, the size, the cost, the functionality

Already, there is a growing number of shared 3D printing services, enabling you to print something of your own design or use (a customized version of) designs that you can find in online catalogues or order through 3D design shops.