below fig1 shows the preferred embodiment of an object 10 having a small orifice object 10 comprises a ceramic blank or casing 1 which may be made from toughened zirconia having a bore 11 casing 1 may be green or partially sintered bore 11 which will usually be cylindrical can be created by conventional methods and is preferably in the center of casing 1 because bore 11 will shrink during firing its precise pre firing dimensions are not critical in the preferred embodiment what is important is that the diameter of bore 11 which is also the inner diameter of casing 1 is larger than the outer diameter of ferrule 5 this is necessary to allow for insertion of ferrule 5 into bore 11 however the diameter of bore 11 should only be slightly larger than the outer diameter of ferrule 5 so that when bore 11 shrinks and then expands upon cooling it will secure ferrule 5 therein ferrule 5 which will usually be cylindrical has an outer diameter less than the diameter of bore 11 the outer diameter of ferrule 5 will vary depending on the application and is generally not critical ferrule 5 will usually have a uniform.