Welger 730 and 830 balers: Welger AP 730 and AP 830 conventional balers have been in production since the late 1980s with a design that has much in common with their AP 73 and AP 83 predecessors. Little change has been made to these dependable machines over the years. And, as such, used examples should be judged on their condition and, equally important, how much work they will be expected to do. James de Havilland reports