forearm tube assembly?

[vmax]

wouldnt freezing the whole thing just make both parts constrict the same? I know you freeze a part when your trying to get it into another part or heat it when you are putting that part over another part. But both together wouldnt seem all that beneficial. Just thinking out loud.

I was given this trick by an old timer. It has something to do with different expansion rates. The metal and wood will loosen.