I saw a Ricky Tims episode online for doing the convergence quilts and he has a big board he irons on - and he tells you how to make it...!
I'll have to see if I can find the link to the video...
whew! I thought I'd never find it! I couldn't find it searching online then I remembered that I had emailed a friend of mine with the link.. and viola! Here it is!!
http://www.thequiltshow.com/season3/303/theater.php[/url]
Okay.. I just rewatched it and he doens't give specific directions however he tells you what it's made of - this is on my to make list... the next time my father in law comes up. My husband is not good with power tools....