We just recently made ours. You can read about it on our blog:
http://domaninspiredparenting.blogspot.com/2010/01/infant-crawling-track.htmlWe actually didn't want to use glue--just imagien your child breathing in those fumes. So what we did was we just pulled the material (are you using naughahyde) really tight and stapled it to the bottom of the board.
You'll want to upholster each piece separately and THEN attach them together.
Let me know if you have more questions!