The Creation of a Turret Clock

Bad coal, bad bad coal!!!

  Getting ready to do a demo/teach this weekend.  Work and hurricanes have been a major disruption for the past 8 weeks or so.  Anyway, I ran out of my regular coal and had to borrow some from a friend.  The problem is that the coal is a very low quality and had a lot of dirt/sand mixed in.  I made a sifter to sift and wash the coal.  About half of the weight of the coal was washed away.  What is left is of questionable quality.  If worst comes to worst, I am going to stop at a coal supplier on the way to see my parents for Thanksgiving.
  Going to go pack for the classes now.  Also, steel is !#$#* expensive these days.  I bought some steel for the clock today and was way pricing.  I spent about $170 on steel this morning.