Might I make a suggestion?
Any time sundering comes up in a campaign, I think it's a good idea to discuss the implications with your players. As a GM it is FAR easier to break a weapon than the character underneath it, (especially with the errata to the sundering rules, which to my mind were a very bad idea). So yes, sundering is a GREAT option. In my opinion, it is also not a very FUN option. Characters become attached to the weapons they use, especially if they have a history and story behind them. As a GM, the question becomes is it fun to break weapons?
Now if a player came to me and wanted to start sundering weapons, I'd ask the same question: will that make the game more fun for you? Sundering is a very effective trick for characters to take out high level fighters or clerics (sunder the holy symbol!) but using it consistently becomes annoying very fast (IMHO).
So give that a thought before you proceed.
--Steve