I had a plywood Strat body and a decent neck that I repaired and some time on my hands - Bad combination. I also had some old large single coil pickup that were extremely microphonic for the project. I also had this small aluminum skillet(8 or 9 inches diameter) and it had a nice ring to it when it fell out of the cabinet, so the project became a Strat-O-Rez build. After getting it together I was surprised to find the guitar to have no 60 cycle hum. Couldn't figure out why, nothing special in the wiring. I did add a small round piezo under the skillet and it had a 5-way switch. piezo on #1, piezo/bridge #2, bridge on #3, bridge/neck on #4 and neck on #5. Later I found out it was the Aluminum after reading a writeup by Bill Lawrence. Now I use aluminum HVAC tape in the cavities of all my guitars and 2 layers in the ones with single coil pickups. It makes all the difference in the world. It cuts out about 75% to 100% of the noise and hum. Lots cheaper than noiseless pickups.