> Another thing, does anyone have a picture of the interlocking corner
joint.

http://fp.keystage3dt.f9.co.uk/wood_joints.htm comes up right off when I
type "interlocking corner joint" into the Google search and specify the
image search option.

Both beekeeper box corner joints are well illustrated there.  The
terminology can vary a bit.  On this site, "Rebate Joint" and the "Comb
Joint" are the names used for the two most common bee box corners.

allen
http://www.internode.net/honeybee/diary/