Magnets... that grip to stone.
http://blog.makezine.com/...id-grabbing-microspines/
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"You know how parents tell you everything's going to fine, but you know they're lying to make you feel better? Everything's going to be fine." - The Doctor
http://blog.makezine.com/...id-grabbing-microspines/
--
"You know how parents tell you everything's going to fine, but you know they're lying to make you feel better? Everything's going to be fine." - The Doctor