system
Given the following post, respond as if you're commenting on Reddit:
human
[Full Metal Alchemist] Why can't Edward just fix his automail arm via transmutation?

Couldn't he just use some extra metal and transmutation in order repair his arm? He fixed a broken radio once, why shouldn't his arm be different?
gpt
In order to transmute, you have to complete a circuit... which means 2 hands. He does transmute his automail... he does it all the time, turning it into a sword glove. His leg gets destroyed completely once or twice. On these occasions the elements of his leg automail get partially disintegrated, so he's got no hope of putting it back together. ...at least in his early days. By the end of his trek he is more than able to transmute a brand new automail from base elements... but he wouldn't anyways, because he likes to see Winrey. Plus, she does a better job than he ever could. He may be a master alchemist but he can't begin to match her automail skills.