The pickup tube in my blast cabinet has eaten away from use. I have the cheap Harbor Fright cabinet they sell for around $250. I’ve used this think a lot and I can understand that this is a part that will wear out. I can make a new one, but I’m having problems finding the right diameter. The size looks to be around 3/8″. I would like to use something like 1/2″ black pipe but fear it would be to big and not pick up the media. What are peoples thoughts?