Increasing cylinder edges after embedding it into a model

[jumpjack]

I started with a standard 24-edges circle to create a cylinder and the a cone which I used inside a complex model; is there a way to increase edges numbers now to get a better 3d printing?

[pbacot]

Probably not without replacing. By "embedding" I suppose you mean it is not separately grouped and is part of other geometry.

[jumpjack]

Yes, the cylinder has already been widely reworked.

[Dave R]

You need to make decisions about number of segments before you make the circle into a cylinder. There are strategies for replacing geometry but exactly what you need to do depends upon how you've made the model.

[Box]

Do you know about groups and components?