When we founded Sight Unseen more than 15 years ago, our goal was to invite readers into the minds and studios of designers, in order to help readers understand how things are actually made. Though the site is about so much more now, we still get a perpetual thrill from learning how some of our favorite furniture pieces go from the wisp of a concept to a fully fleshed-out product. Much has changed within the actual design process in those 15 years as well, as new tools have completely transfo...