My basic triple-edge tool is FFRL'UUR'L. It rotates three edges that
all lie in one equator. Manipulation hint: move that equator instead
of doing RL' and R'L.

Something like Kim's tool can be obtained by setting up with RL'U and
finishing with U'LR'. All together: RL'U FF RL' UU R'L U'LR'.

---Wechsler