Practice Sharpening serrations on what?

[GarageBoy]

I picked up a few carbon steel knives to practice plain edges on, but how about serrations? What's cheap and gets sharp?

 

[dialex]

Any chinese POS will be fine for practicing. It will get sharp (but it won't stay this way) and you may experience chipping off the blade when it becomes too thin.

 

[GarageBoy]

What freehand equipment should I get?

 

[GarageBoy]

Sandpaper and a stick, I got it thanks!

 

[dialex]

And for the final touch a few stropes with a leather shoelace and some CrO.