Magnets... that grip to stone. 
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
	
	
	
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

 
 

 
