SubD Holes on curve objects

[jpfrancisco]

Hello guys. Quick question do to create subD holes on curve objects like in Bowling balls and such. Tried to modeling it but there seems to have lumps on the mesh maybe I'm modelling it wrong. Can you guys help me out. Thanks.

[jpfrancisco]

anybody have any tips?? or ideas

[Diurno]

hi, do you mean something like that?

if yea, that is a normal sphere, with 3 poligon extruded in the inner part with Move Normal, then added a split edge on the inner border to make it sharper.