I have only watched the explanation (not the 3 effects in which the principle is applied) I am
already impressed with this !
The principle is excellent and the troubleshooting section
makes this surefire ! The small risk involved in letting the spectator pick the billet himself is
not really a risk because you have surefire outs to conclude the effect and fo*** the billet you
want.
Very clever !!! Bye, I can't wait to watch the effects now ! :)