tip of a blade造句

Jambuka would refuse the offerings of food given to him, claiming that he would not consume anything but air, or he would only partake a small amount with a tip of a blade of grass, claiming that the offerings had brought merit to the offerer.
It was suggested to the jurors by the prosecution that Downing was tortured, made to suffer while the tip of a blade was pressed against her chin, and that O'Brien acted out a sexual obsession by stabbing her, and by carefully removing her bra, slashing it, and replacing it against her body.
It's difficult to find tip of a blade in a sentence. 用tip of a blade造句挺难的