I built a simple light box with parts from Home Depot. The light fixtures are four 2 X 20 watt fluorescent strip light units fastened to a MDF-laminate sheet. They are spaced as close together as possible. The mounting sheet is in turn mounted to a study frame made of 1X4 pine lumber that keeps the tubes about six inches above the printing frame. I mounted a standard electical box and switch on the side. The whole thing cost very little, and it works well.