How is Sir Bradley Wiggins 3D printing his titanium handlebars? I just read an article about how Sir Bradley Wiggins is going to try to break the 1 hour distance record soon. In it they mention


  One of the unique new features is a set of 3D printed titanium
  handlebars


How is that possible? I thought you can only 3D print plastics?
This is how. An engineer explains:


                
            

Basically, it's a layering process. Layer by layer, the 3D printer lays down a thin sheet of powdered titanium and a laser melts and fuses that titanium where the part needs to be. It starts at the bottom and works up. When it's all done, you simply remove the unfused titanium and voila, a new part emerges.