Re: IE3D help!!!
Hi, nazanin:
I believe the command ADV EDIT->BUILD HOLES AND VIAS FROM SELECTED POLYGONS exist quite some years. It should be available on IE3D 9.x. You can use it in this way:
1. You draw your patch on z1.
2. You draw the shape of the slot on z2.
3. You select the polygons on z2. Then, you select ADV EDIT->BUILD HOLES... You check the layer z1 (or more layers if you want the slots on multiple layers). Select OK. IE3D/MGRID should build the holes on the patch on z1 for you. There are multiple options (filling the hole, build a via between layers).
Best regards,