So I have a part that I want to create a mold for in my zcorp printer so I can use it to cast rubber parts from.

I am looking for a good quick way to do this. I will only be pouring in urethane rubber not injecting like a real 

injection molding system.

I am currently experimenting using a solid block around the part and subtracting the part to create the cavity.

I tried to create a parting line but I can not seem to get ti to work properly for lack of understanding I think.

Any and all suggestions are appreciated.

Mark