I think the magic of the WEPS or any guided system is consistency. Set it up the same way, every time, and use the same technique, same pressure, same method, and you will get crazy sharp tools. You might be a little off on true angle, but without a CNC jig grinder, you will not achieve perfection, and even with CNC equipment, you are still fighting physics, and the fact that nothing is perfect, even perfection.
