Here we are, two out of the three of the team, using wet and dry to bring these old brass hinges back to their former glory. Again I'm using hinges I salvaged years ago from old cupboards. These hinges will go on the concertina doors. Each door is 60cm wide and 180cm tall and there are four of them. The doors will have four of the hinges connecting two panels together to create the bi-folding doors.