Steam room free form modeling


I’m modeling a steam room that has this “melted” kind of look like stalagmite cave but not that detailed.
I know how i can cut the pieces from that model for manufacture and cnc but were wondering what process should i use to make the inner surface modeling. just make a tunnel with control point curves and extrude and after that use lot of control points or how?

Thank you in advance!

Hi @user1799
Without seeing any sketches or reference pictures, it’s a little hard to give you any solid advice, but from your description, I would look into the Sub-D tools.