the two things i dislike most is annealing and removing the stubborn carbon on case necks. since i bought an annealeez machine, annealing is a pleasure. removing neck carbon is a major PITA. i would spin the case with one hand while holding it tightly with 4-0 steel wool and they would come clean. my vibratory cleaner did not get it off. after doing 100 on night i awoke in the middle of the night with pain in my forearm. motrin and time and i was better, but i decided to find a better way to clean that stubborn ring/ smudge of carbon. several procedures were tried, but i settled on this one. using a sinclair case mouth deburring tool holder i inserted a tightly fitting piece of foam(i tried several materials) with the end just outside of the device. took a 1 square inch piece of 4-0 steel wool held it against this foam and pushed the case neck into the tool holder until the steel wool was held by the foam and spun the holder in a variable speed b&d drill mounted upside down in a vise. 3-5 seconds and the neck was VERY CLEAN and even the shoulder was shining. there is some oxidized brass on the neck/shoulder after annealing and this comes off nicely with this gizmo. i can clean 20-30 cases before the steel wool gets dirty. a snug fit of the case into the steel wool/foam is necessary. i'v tried for 45 min to get pics but no luck. will try again later.