View Single Post
  #19  
Old June 30th, 2009, 06:26 PM
hookahman1988's Avatar
hookahman1988
Status: Offline
Hookah Enthusiast
 
Join Date: Nov 2008
Location: Pittsburgh
Posts: 1,440
Send a message via AIM to hookahman1988
Default Re: "Natural" way to polish copper

Quote:
Originally Posted by mattathayde View Post
salt has a mohs hardness of about 2.5 and copper (penny) is 3.5 (granted the fact that the copper is so thin might make it weaker). so there is no way that salt can scratch copper

-matt
The thinness of a material doesn't affect its hardness. Hardness is determined by the bond strength of the atoms its composed of.
Reply With Quote