I've nevr actually heard of a guy with a plastic strumming hand, but Toni Iommi of Black Sabbath had plastic fingertips on his fretting hand, if by chance you might've been thinking of him.
Hope it helps
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Randy lives in me
There are only two important things in life - There's music and theres girls, not necessarily in that order....
The Ace's Guitar Tricks
The Ace's Guitar Tricks