Hi,i am brand new and this is first post.
I just had hand sugery,while in rehab i used a machine that had hot air and corncob media in it.i asked the tech how often they changed corncobs out;he said every six months .i asked him to save it for me and he handed me a large box(34lbs)saying they just had changed it.at home in my dillion i added two tablespoons of brasso and tumbled about 1300 .41 magnum cases,it was amazing how quickly they were cleaned!.
i am sure a lot of people have a rehab center near them(or have to visit one) and might find this info helpfull.i hope it helps someone save money.legend