Let me apologize if I was rude. I work with different materials varied behavior, I have worked with vinyl, carbon fiber, polycarbonate, metals on blacksmith, silicone and many plastics. So I understand how complicated it is to work with some of them. Answering the question, yes I do some cosplay but not as innovative as these. I have been a zombie, dracula, a mummy and a monk.
Thank you! No the weapon doesn't change, I have make my sword in 4 days, and I haven't got the time to finish some details, the con was just after working on! So I haven't got the time to make it change ^^