I like to see smart innovation like this. Thinking outside the box. A bit like Bobs system of using wooden buttons and bits of wire to drive a wheel when filing and burnishing pivots.
The fact is that if speed is not of the essence, this is a great way to get results that are just as good as you would get with an expensive indexing system. I like to dream that at some time in the future I will be able to invest in a dividing head, or perhaps a digital system with a stepper motor, but in the meantime this solution is for me.
Brian