Inward extrusion

 From:  Metin Seven (SEVENSHEAVEN)
6307.1 
Hi,

I was wondering if it's possible to project / intersect / merge a curve onto one side of a solid, and then extrude the new face into the solid to create a hole, after which you can fillet the hole's edges?

What's the best / fastest way to realize this?

Thanks!

Metin