i am guessing half of the tail section was made to groove diameter and the head section was to the bore?
Ken,I suggest you make another second "mold" side from the same material the one with the offset. Finish what you started.If I was machining these die halves "one at a time", I would create a toolpath that actually cuts the both in one set up; as if it were one long piece. By cutting a little in one pocket before moving one, tool wear can be distributed, rather than accumulated towards the last cavity; and the second die-half.
you mean to set th mold halves onto a self center vise with the cutter at midline while the halves advances towards mdline? that would be ideal isn’t it? the vise it self is expensive though.
we are re boring the dowel pin and increasing it to 6mm with both faces zeroed in and clamped.