Best axis for cutting agate nodules?

I'm a terrible person to ask this question because on that type nodule I pretty much let how I can get them firmly into the vice determine how I cut them *L*. That being said, those varieties of agate often have surface indications that tell you how to slice them for the best full patterns and I let that guide me too. Generally that winds up being perpendicular to the flat bottom if they have a flattish bottom. Condors are often very angular or fractured so you have to take that into consideration and of course, a lot depends on whether you want two even halves to polish or the most cabbing slabs you can get....Mel