Magnetic Box

This is a box, to hold things. It's designed to work with some 1/2"x1/8" diameter magnets such as [these ones from Lee Valley](http://www.leevalley.com/US/wood/page.aspx?p=32065&cat=1,42363,42348). You get four magnets, and then you have a box that attaches itself to the side of metal things, such as fridges, gigantic laser-cutters, that kind of thing.