Stress Machine #1 (Wise Women)
3 steel plates, 1 piece of string


Stress Machine #2
1 steel plate, 2 steel rods, 1 piece of string


Stress Machine #3
2 steel plates, 1 steel rod, 2 pieces of string

http://www.angusmccullough.com/files/gimgs/7_mcculloughstress1.jpg
http://www.angusmccullough.com/files/gimgs/7_steelside-copyweb.jpg
http://www.angusmccullough.com/files/gimgs/7_steeldetailweb.jpg
http://www.angusmccullough.com/files/gimgs/7_steel2side.jpg
http://www.angusmccullough.com/files/gimgs/7_steel2back.jpg
http://www.angusmccullough.com/files/gimgs/7_steel2string.jpg
http://www.angusmccullough.com/files/gimgs/7_steel3front.jpg
http://www.angusmccullough.com/files/gimgs/7_steel3closer.jpg
http://www.angusmccullough.com/files/gimgs/7_steel3back.jpg