I am beginning with RF circuits, and had some problems when passing from breadboard to the final device. As I was browsing, found that the reason is the parasitic capacitance that the breadborad generates between connections. So, in order to make temporary circuits for RF devices it came to me the idea of some kind of conductive putty in which you could insert the component pins, and found some conductive paste online, but it's quite expensive, and I don't even know if it hardens like epoxy or if it stays soft. Do someone know an alternative for this or how to make a similar material?