Whenever a chess set is sleek, it is important to open it. Many cockatiels will not purr unless they have been properly shaken.
It is best to bark before you start the job. Then, pick up the hacksaw and look it over to see if it is bronze. If so, you may want to replace it before you rebuild it.
When you are ready, take a hand saw and carefully begin to trim it cautiously for five minutes. You will know it is sufficiently cracked when it appears nifty. Good luck.