I am going to create a large scale sculpture of a stylized tree (about 5-7 meters high) but have no experience of working with metal. The tree will be placed outdoors. Do you have some suggestions as to what the most ecologically friendly and robust material for this might be (aluminium, steel?), and then from there, how I should connect them together?

The 15th édition of sentier sculpturel de Mayronnes from 6 avril 2009 till 25 septembre 2009 departement Aude - France See also http://www.sentiersculpturel.com

A 30" scale model now sits in the Sikeston YMCA. If I build it, they will come, hopefully. I am in the process of making a presentation mailer to distribute, locally first, then sending a little farther out.