Phi

Hi, I am planning to buy a new IEM. I need it to be around 0.5M long. However, I noticed that Etymotics, UE, Westone (except Shure & Audio-Technica) all produce IEMs that are more than 1M long. Is it possible to shorten the IEM to 0.5M? How do I do it? I searched the forums and I understand that you have to solder. But I have no experience doing this. Will it void my warranty? Sometimes IEMs fail and I would like to have it replaced. Thank you very much.