How can I cut a circular hole into this curvy shape?

Question

I'm trying to recreate the PARTU air purifier below, but I have problems cutting a circula hole into the curvy body.

My approach is to model the curvy body first, then use a boolean circle to cut through it, like this:

But the result is a total mess:

What's the optimal way to make this shape in Blender?

Answer 1

Actually it looks like the "crown" is a distinct part:

So I would create 2 different objects, and for the main part I would do it this way:

• Create your basic shape from a subdivided cube:

• Use the knife tool to cut (K to activate, Z to cut through)

• Press V to separate, delete the useless part.

• Mirror the shape, merge some vertices with alt M to keep a clean topology:

• Give your object a Subdivision Surface modifier, extrude the hole, add some edge loops to sharp the edges:

• Alternative topology (no triangle):

You could also use a Shrinkwrap modifier to get a different topology: