Heh, the number of bits that get modified before they ever get glued down... I swear that was part of the reason I made so much more terrain when I was expecting to give it away afterwards - any mistakes I made would be forgotten after I gave 'em away.
I gave away some 'failed experiments' to the kids last year. Then after I moved I couldn't find them afterwards...
(This actually solved part of the 'what happened to my WW stuff' problem a few months ago, I had just forgotten that it was given away. Less was destroyed, and more given away than I had feared, though in all honesty I treated the ones I still had very badly in the move and the months that followed.)
On the other hand there are some bits that I just won't attempt - the cannon being some of them. Not a huge deal as I already have a fair number of metal or plastic cannon in various callibers. (I did build the Siege Works bombard, it was used in a siege game.)
The Auld Grump