it is possible to bend open strings
i can also do it by bending the neck with a great force against the body of the guitar, which tightens up or loosens down the strings depending on if i pull or push the bend of the neck.
cool cause i can thus bend natural harmoncs
do by pressing on the strings before guitar nut
only works for guitars with a headstock
although my rick toone guitar does have a space between bridge and end of string that allows for pushing down. so can still be done.
questions and feedback: if you have any questions, or need clarification on anything, or want to see something more, please email me firstname.lastname@example.org. i am always looking to help out and for ways to develop this further. this is a constantly growing brain, and i would love to build it with you. to chase reality together.