Positional accuracy of four die tray systems

This study evaluated the positional accuracy of dies with four die tray systems. The die trays were: (1) Accu^*trac Precision die system, (2) Model-Tray system, (3) Sterdo Split model tray, and (4) Tricodent One^*Cast die tray system. Positional change of the dies was measured by using an Olympus binocular scanning tunneling microscope (STM). Positional change of the dies was the difference between preremoval and postremoval die position. Results show that all four die tray systems are not significantly different in most measurement categories, although the Model-Tray system was significantly different from the other die tray systems in one measurement category.