A familiar gurgle could be heard from behind the cork and steel frame wall. The sound of a thinner can being tipped over onto a rag. You hear a fervor of rubbing, more tipping sounds an a cough from the other side. The can's dull aluminum thunk as it hits the table. A smell of nail polish attacks your nostrils. You cant bear the smell as your head begins to reel backwards trying to regain your balance. You peer between the cracks in the wall and watch the person rub a piece of paper with the soaked rag on a plate of plexiglass. Dull isn't it?
You sidle away and return a half hour later to find the plexiglass covered in beautiful markings. Plans from a McKim, Mead and White book. Wow you think.