Acha! I made one some years back. I first soak the leather "washers" in white glue + water (50/50). 
 As you tighten the nut, you can add in more till the length of the handle is filled. 
Leave it for a day or so to dry. 
Don't know how to attach a pic here!  
Check this out: http://asailorsleath...ather-tool.html