So the clay I was using was far too soft, and wouldn't keep the nice sharp edges I was looking for. So I peeled off the details and molded the core in alginate. Smeared Bondo in the mold and Sanded it down. Spray paint helped me find the details that needed filling. So here's where we're up to:
Next, I'll add the rings around the lens holes and temple plates. Last, add the faux rivets and cut out the strap slots. Can't wait to mold and cast this puppy.