Request: Dresser pipe coupling

http://grabcad.com/bibou.koubaa asked me if I could help him model http://grabcad.com/requests/dresser-pipe-coupling. This was a request by http://grabcad.com/r.holder for a Dresser Style 38 Coupling to fit a 16" dia. steel pipe. I found a little info on the internet so this is sort of close. This was my first time using the tool box add-in and I think I did it alright. the sketches are a little messy but I think the model turned out nice.