Now that the internals of the Boston KS sharpener are all clean, I'm going to sharpen the blades and reassemble it.
This is one of the blades. I tried to show how there is an overhang on each of the blades which is the edge. I'm going to run a file over the top and between the blades themselves and see if that will sharpen them a bit.
I started with the medium, then the fine and super fine files.
I went over the top surface and then angled the files to get in between the blades - into the gullets. In running my finger over them, they did feel sharper, so it seems that I was able to sharpen the blades - they seem to have a better cutting edge now. Not that they were dull to start with; I just figured since I had it apart it was worth taking the time to try and sharpen it.
I have a couple other sharpeners to work on, so I'll so some research see if there is an actual technique to doing this.
I put a drop - just a touch - of Tri-Flow lubricant on the friction surfaces on the ends of the blades and the shafts. I thought something like Lubriplate grease would be too heavy and would tend to attract dirt.
It spins very easily now. Another "cheap thrills" project.
Like an analog speedometer - this a perfectly designed device. Why would you need an electric sharpener?