The one stop shop for all things machining...Modern Machine Shop Online. The only downside is...their forums. They never watch them so they are a steel cage free for all, or machine sales spammers galore
They always have the current list of upcoming shows world wide on the front page. This is a great forum...but you will hardly ever get any response about trade shows
http://www.mmsonline.com/dp/Calendar...26487938401052