Got an additional (6) HS-905 deburred. The Dremel Scotch Brite deburr cone tool made from 1" 7a cut and polish wheel make the inside of the part much easier to process. The cones do not last all that long but for each 1" wheel you get 12 - 16 depending on how you cut the wheel up. Well worth the effort. The Dremel flex shaft also makes life easier.
