Can't join surfaces

 From:  Shaun (MOISHAUN)
4345.3 In reply to 4345.2 
Thanks but...

I understand how to make a network from the curves on top. The problem is once the network is made it won't join to the bottom piece on the Orange layer. I can't find any holes between the surfaces that would prevent them from joining. So I don't know why it won't work.

thanks again.