Dow Corning makes a line of silver conducting inks. Some are thermosets and
some are thermoplastics. I don't really know the best way to remove the ink,
but I imagine that the thermoplastic would be more amenable to removal.

(http://www.dowcorning.com/content/etronics/etronicspim/default.asp)

good luck,
Joe Grogan

Quoting "Eric J. Correa" :

> I am looking for a conductive paste (conductive ink) to
> promote conduction in electrical measurements.  It has to be
> removable.  Does anyone have any idea of any manufacturer?