Patent ID: 8624167

Claim:
A device for making a muffle for the manufacture of dental restoration parts by using an embedding compound, the device for making a muffle comprising: a muffle base ( 26 ), a tubular sleeve ( 36 ) surrounding the muffle base, and at least one muffle insert ( 12 ) is a one-piece disposable part which is arranged on the muffle base and can be separated from it, wherein at least two cylindrical press-channel forming elements ( 16 , 18 , 20 ) extend from a flat-formed portion ( 14 ) of the muffle insert, and further extend parallel to one another and are spaced apart from one another and wherein the forming elements can be burned out leaving no residual material wherein the forming elements have a closed end, at least on one free end face opposite from the flat-formed portion wherein the wall thickness of each forming element ( 16 , 18 , 20 ) corresponds to at most 0.1 times the diameter of a forming element ( 16 , 18 , 20 ) and the forming elements ( 16 , 18 , 20 ) have a wall thickness that substantially corresponds to a wall thickness of the flat-formed portion ( 14 ); wherein the muffle insert ( 12 ) protrudes into at least one depression of the muffle base ( 26 ) and a proiection ( 32 ) of the muffle insert ( 12 ) protrudes at least partially into a groove ( 30 ) on the muffle base ( 26 ) formed at least partially around it.