The Creation of a Turret Clock

Whoops...

  So I had some nervous energy and decided to go ahead and file the lock plate.  Went pretty well until I got to one corner.  After a minute or so of futility I realized that I must have accidentally hardened the corner.  When steel is harded, it is very difficult to file.  I probably quenched the steel when it was at the right temperature.  So, I left the corner until I can soften it in the forge again.
  I was also happy because there were a few holes that were close to the edge.  After the filling, there is still enough metal to keep the nail from breaking out the side.  From what I can see from the original, this may have happened at one spot.
  Tomorrow, I need to pick up some steel for the nails.  I don't have any stock thin enough and I don't want to spend an hour thinning down metal just to make nails.  I also hope to go ahead and get the keyhole punched.
  Right now I'm watching a special on Heron of Alexandria.  I've seen it before and it amazes me what he was able to do.  The automatic theater is of particular interest.  After I complete the clock, I may try to recreate some of his items.  The omen machine is also pretty cool.