Nice microscopes guys! I picked up a decommissioned scope like the first one Robert posted and use an led light from Harbor Freight powered by batteries. I taped it to the back of the scope. I don't have a permanent work area for the scope so no wires is good. I only use the one light which works fine but I modified the stage to position the razor under the optics in a way that I don't have to keep searching for the edge and the focus stay close.
Here's the light:
2 Piece Flexible Shaft LED Light
and here it is on the scope w/ Holli checking an edge:
http://straightrazorpalace.com/get-t...tml#post647967