Hi Ross,

I don't exactly have any blueprints for building a dredge, but a while back
I did an article for American Conchologist on dredging, and the illustration
which accompanied that article can be seen here:

http://members.aol.com/paulcyp/XXDREDGEXX.JPG

        The text of the article includes some information on constructing a
dredge. If you would be interested in that, I'll send it to you.

        Regards,
        Paul M.