Help with shaped window reveal

[ncoutts]

Hi There,

I am trying to create a shaped window reveal, like the attached sketch. I would normally do window reveals as a sweep, but am struggling with this one on the basis that it changes shape as it goes round. Or is it better to think of them as two separate elements? I'm struggling with how I would approach this, I can't find a tutorial that's even vaguely similar.  Any hints/tips much appreciated. Thanks in advance. 

[barthbradley · Accepted solution]

I would model this in the Window Family by extending the Jamb Extrusion and cutting it with a Void Extrusion.  

You could set up Parameters to control the exact protrusion and angle cut.