#include "default_materials.inc" 

#declare old_nail =
object {
    union {
        difference {
            sphere {<0,0,0>, 2 scale <1,.25,1> }
            plane { <0,-1,0>, 0 translate <0,.25,0> } 
        } 
        cylinder {<0,0,0>,<0,-40,0>, .7 }   
    }
    material {M_steel_aged_2 scale <1,.5,.5>}  
} 