why not cutting on Tin? Bi or Silver?
http://en.wikipedia.org/wiki/Bismuth
http://en.wikipedia.org/wiki/Silver
http://en.wikipedia.org/wiki/Tin
http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness#Hardness_.28Vickers.29
- JuanPabloCuervo
- Posts: 63
- Joined: Sun Oct 03, 2010 2:56 pm