I've heard there is a discussion in the Ohr Sameach regarding when someone appoints a shliach (messenger) to divorce his wife, whether the person must use his own klaf (parchment) to write the get on or if he may use the klaf of the shliach.
The Ohr Sameach there apparently discusses many nafkeh minei (consequences) in this concept of making someone a "shliach" and how far it goes (i.e. does he become literally like the person himself.) I really wanted to ask more and other questions in this regard but I'd rather see what the Ohr Sameach writes in this to better ask the other questions.
Where can I find this discussion in the Ohr Sameach?