One of the technicians in the 3D Systems factory in Pinerolo, Italy, noticed the skull on my Harley-Davidson sweat shirt and asked me to follow him to a side room which had a showcase of 3D printed and machined parts. He reached into a shelf and pulled out a Harley-Davidson skull machined out of aluminium to show it to me. His English was as good as my Italian. But we still managed to have a nice conversation.