Nip Tuck Push Pull

Now that 3D models are freely available on the internet, what’s to keep me from slightly modyfing an
existing object and turning it into something new?

I took a Panton Chair and turned it into a sofa…
Do I infringe on their copyright?
How much modification is enough to stave off the lawyers?

As I mentioned on my previous minifesto 3D Print Will Kick Our Asses,
this is just the beginning of sampling in the design world.
I can’t wait to see the equivalent of Danger Mouse’s Grey Album…