At Industry City in Brooklyn, Sergey Levchin’s Waxwing Studio makes fine, freestanding furniture designed around the individual client. What began as Levchin’s personal pastime grew into a side gig and then his main work a little over a decade ago, with commissions developed collaboratively from sketches, reference images, or practical requirements. The studio’s work ranges from sculptural standalone pieces to highly tailored furniture that solves the particular needs of a room.