jmsdad,
I like it. American ingenuity.
I've got to try one.
By the way. Midway has a reasonably priced pad grinding fixture.
It wouldn't work with the flip flops unless you epoxied on a stiff backer.
Thanks for sharing your skill.
John


I am the way, the truth, and the life: no one comes to the Father but by me. John 14:6