The best sample well is a bifilar coil wrapped around a canister. What it does is sense the vibration of the sample and feeds it to the Radionic system which amplifies it. say if u are looking at the 40s era, it would be helpful putting something from that era in the sample well...Lumbergooz uses an old resistor, capacitor, or even a knob taken from an old 40s make radio, that little cap or res, has the time stamp of that era. Look at Steven Gibbs HDR for more details, also see
@steven chiverton posts they are rich with info..