Patek Philippe x WIRED.
"I went to photograph how Patek Philippe has used science in order to etching the balance spring out of silicon for their new Aquanaut Travel Time Ref: 5950G
Since the process is photo sensitive there is a certain light at this stage of the process.
They also have a little onsite furnace, and some secretive machinery to create pure engineering magic."- Christoffer Rudquist