How-To: Physical therapy pulley

My friend Randy and I both recently had joint surgery (me on my knee, him on his shoulder), and we’ve been talking often about physical therapy. For shoulder patients, a couple of handles on a rope moving around a pulley over the patient’s head is used for stretching the joint, and is recommended for use more often than would be convenient to attend the treatment center, so Randy made his own, and in true Instructables fashion, shows you how.