C# XNA - Render(?) 3D object when off/half off screen. (Culling?)

Question

Objects that are really large like, lets say a game map will outright not show up in XNA if their origin point is not on the screen.

I can't find a bloody thing on this. I have looked into culling and attempted to add it in a few forms to the project to counteract this but to no avail.

I want to draw objects who have origins off screen so that if they are partially on the screen they are still displayed. How would I achieve this?

From the documentation I read cull should do this, shouldn't it? My poor brain matter (._. )

On a side note if anyone has any experience creating primitives within the Ox Engine for XNA, I'd be thrilled to hear from you.

Edit: Hellfire... I'm pretty sure this problem is just Ox's doing. Goddamn ox. ALL OF MY HATE.