How to model in surfaces and then pattern?

Hello Everyone,

What I am trying to achieve here is a  plastic housing component with 4 pins whereby another component with female pins can sit on top within this bowl.

However, I thought I would be able to model it as a quarter and pattern it. I have built it using Surfaces and then knitted it to make a solid but this will not allow me to mirror or pattern?!


Furthermore, when wanted to extrude a circle sketch off a curved surface I can't seem to find away, other than putting a plane roughly where I want the feature to extrude from, to get it exact?

I am aware that this may not be the simplest way to build such a part, so, advice is greatly welcomed.

I've also popped a couple of screen grabs below.

Cheers

S

SolidworksParts And Features