A new aluminum stretcher that does not employ conventional keys, expansion bolts, or springs for tension adjustment has been developed. The tension adjustment is achieved by moving the stretcher bars in each direction independently by turning thumbscrews positioned along the stretcher. This stretcher can be used to strengthen an existing stretcher or as an artist-grade stretcher. Its construction and mechanical properties were analyzed and compared with traditional wooden stretcher with keys to examine craquelure patterns incurred on the canvas and assess any deformation resulting fronm the two stretcher systems. Expansion by means of movable aluminum bars has greater impact at the center for the canvas and does not bend the stretcher. Further research is required to gain a better understanding of mechanical stresses resulting from expansion and methods of tension adjustment.