To shapen blades?

[weenerdog3443]

anyone ever seen a device like this before or if it works?

http://www.google.com/patents?id=luk_AAAAEBAJ&zoom=4&pg=PA1#v=onepage&q&f=false

 

[Buford T. Justice]

anyone ever seen a device like this before or if it works?

http://www.google.com/patents?id=luk_AAAAEBAJ&zoom=4&pg=PA1#v=onepage&q&f=false

There are knife sharpeners similar to this, but instead of balls they use crossed prongs...

 

[weenerdog3443]

Yea I remember those ones but Ive never seen one with marbles or let alone for doing razor blades