I really enjoyed this series; screenplay, plot, dialogue, characters, casting, performances, location, et al!
SPOILER ALERT!
I am, however, a bit of a stickler for continuity and just have to beg the question: Why was it preferable for Tom to cut off his hand at the wrist rather than cut through the 2" piece of piping he was changed to? Or, for that matter, the chain's lock, even?
I've gone back over the episode (27:11 episode #9) and reviewed it to see if there was anything preventing this, and I can't see it. You may recall Tom himself was bound with rope but his right hand was wrapped in chain and padlocked to one of two horizontal lengths of 2" piping. After the escape a hacksaw was shown on the floor nearby.
I'd be open to any thoughts...?