Thank you so much for the details - and the pictures!! This is going to be helpful not only for me, but my friends who haven't yet discovered the magic of Dave's and all the wonderful information here. Thank you for all the work you put into this.
I pretty much have done the same thing in constructing my rain barrel except that instead of screening material I used an old sheer curtain cut to the right size and just tied a piece of thin rope around it to hold it in place.
Great article! The publication is timely, too. I know, everybody is thinking -- timely?? It's not summer, we're not having a drought. Right! It's not spring or summer yet, and we're not out in the garden every spare minute. Winter is a great time for projects like this that we know we will be very, very glad to have done when summer is here!