Air edgers provide very high impact air force so are a good choice of nozzle for air blow off drying / wiping. The high impact from air edgers mean that they can often be used to wipe liquid from complex shaped objects where other less powerful air focusing devices would fail. This is because a complexly shaped object will inevitably shield part of its surface from the air force. It is often impossible to get a complete 360 degree air blast around the whole object so some parts will rely on the deflected air currents from the initial impact points. As such the air blow off effect is greatly reduced and so requires a much bigger initial force if it is to be effective. And example would be drying bottles on a conveyor.