I'm trying to print a prototype for a mobile device and I want to know what materials I can use for it? because on my tests if I use PLA or ABS and under that I put a conductive rubber nothing happens, the electricity from my finger doesn't go through the material, so I was thinking If a silicon material can be used to achieve this, and what materials or brands can you recommend?  
Hi hubowners,   I am interested in 3d printing clothing. I'm looking for soft materials, what feel soft on the skin. Who have experience with these materials? and which materials are useful?   thank you for your comments!