I am starting a rather unique project and thought I would ask a few questions before I get too lost. Basically the project is to create an hour glass that can be controlled so the sand will go both down or up. My first thoughts were to use a series of electromagnets in a pulse series to lift the ferric sand up and begin forcing it through the center of the hourglass, while pulling the sand up with another electromagnet at the top of the glass. However, I have very little experience with electromagnets, and have never built one. To make it more complicated it must be able to run on a 110v system. I was hoping I could get some advice on how to create an electromagnet (or series of electromagnets) strong enough to move ferric sand approximately 10 vertical inches. By this I mean size, shape, any special materials (other than the obvious iron and copper wire of course). Also, will I need to make any special modifications to the circuit in order to run on 110v other than resistors? Any help would be appreciated.