Quiet air blast nozzle

thingiverse

This is a very efficient Air chip blaster/nozzle that entrains air, making it much quieter and more efficient than a standard open ended air nozzle. This reduces the amount of compressed air required to do the same amount of work, saving money in the process. Print vertically, sitting on the bottom ring. You may have to scale the model up a few percent depending on how stiff your flex lines are. Chamfering the bottom edge may help as well.