Bare Conductive Paint cracks with with age causing it to become inconsistent in transmitting electrical currant.    

  I have a collection of conductive paint that is sitting on my workbench waiting for a paper computing project to begin!   Circuit Scribe pen from ElectronInks that I purchased at Maker Faire NYC September 2014.       Also on my workbench is Bare Conductive Paint and CUPro from LessEMF.     Time to get to work!