How to create mold for part?

I have been working on the part for two days and as far as i can see the part is does not allow the surfaces to knit when i try to insert a tooling split. I have attached the part in question. The mold is to be made into a die for die casting. Please help.

2 Answers

I will get back with you in a few with a possible solution.

This shows a backdoor way to get around using mold tools! hope it helps!