Great model Rob! Printed great, despite my refusal to use a lot of supports, like in between the brow, the center of the helmet, and above the rear vents. I wasn't careful enough when sanding and the weakest spot between the tops of the ear pieces and the ends of the horizontal eye slits cracked slightly because of the natural flex of the mandibles. I tried to remedy by fiber glassing the interior (which helped add some bulk to the helmet), gluing temp supports, filling cracks with epoxy, etc., but the cracks kept returning. I also probably didn't include enough infill. Lesson learned.