Frank Plant is a Barcelona-based American sculptor who works primarily with welded steal, making large-scale wall-mounted sculptures that look like delicate line drawings. Via his website:
My work is about physical and social observations. I think of things in terms of compositions whether that be an object, a line of text or a social situation. It’s important to me that the work be open and accessible. I look equally for harmony and discordance and find them similarly revealing and fascinating.
He has an extensive portfolio of work available here and you can also follow him on Flickr and via his blog.
