These are neat. I'm reminded of Claude Mellan's face of Christ from 1649. This also uses a single continuous line, but he was carving the line by hand into stee

These are neat. I'm reminded of Claude Mellan's face of Christ from 1649. This also uses a single continuous line, but he was carving the line by hand into steel! https://www.gallery.ca/magazine/your-collection/a-familiar-face-unveiling-claude-mellan https://www.gallery.ca/magazine/your-collection/a-familiar-f...