I have fixed a lot of wastes in my time.
Here is some examples - I think there is a couple more around but forget which one.
While it is preferable to use whole and unbroken waists, like my man Outback says, when in need I will use them with out hesitation. Also making your own middle part can allow you to put different legs in that would normally not fit.
Do you know what I mean when I say tongue and groove. Its a carpenters joint but the process and idea is very much the same. Yes you do use expoy for the process but not for actually glueing principles. More like a fill in the gaps and or scuplting.