Work on the dome has finally resumed after a failed well-pump needed a few months to order and install. As the dome rises and the cob needs to be hauled up scaffolding, progress takes longer, but the winter days here in southern Arizona are beautiful - sunny in the low 60's - perfect weather for cobbing.
I'm using the rebar skeleton as a guide to shape the exterior of the dome. It's all by eyeball. The thickness of the dome wall is approximately 1-foot thick. When shaping the dome, I parallel the rebar. But as I near the top and the angle change is more pronounced and the challenge to shape the dome uniformly increases.