Sharpening a draw knife

[Minnesota Bill]

I picked up 3 very used draw knifes at a flee market this summer.  A friend made some new handles and I cleaned them up some.  One is a Fulton 10 inch, another is marked ESSEX M 9 inch.  The third does not appear to be  marked.  One appeared to have been used as a froe, the back spine rolled over from being hammered.  I filed them smooth again and after cleaning them up noticed small chips on the edge. My question is how to best get the edges smooth again and how to sharpen them.  I have read where some leave them dull for removing bark.  Opinions?

[George Tsoukalas]

I like my tools sharp. I bought a dknife at an "antique" dealer. I steel wool of the rust and removed large nicks with a fine file. I left the little one. I then sharpened the the edge with  a medium stone keeping the same bevel and then lay the stone flat agains the bck for a few swipes. put some machine oil on and Lord willing will use it this winter. Jawge

[Nim-rod]

I glue a fine sheetrock sandpaper sheet to a 3" piece of wood and draw down it like I'm shaving wood. Seems good so far! I tried other ways but the angle would always be off a bit.

[Osagetree]

http://www.caribooblades.com/drawknifesharpening.html

[Jim Dahlberg]

I use a round axe sharpening stone with different grits on each side.  These are carborundum stones and can be purchased at most any hardwware store.  Clamp the knife in a vise by the handle and stroke the stone lengthwise over the blade.  Use the heavier grit first and finish up with the lighter grit following whatever bevel you want.  End up by hitting the flat side a few licks to take off any burr.  WEAR LEATHER GLOVES!  Sharp blades can take off hand hide quickly.

[Minnesota Bill]

Hey Guys, thanks for the suggestions.  I have three knifes so maybe try three different ways.  Thanks again.
Bill