Saxophone Resonators
I purchase my saxophone pads without an installed resonator. It allows me to match a newly installed pad with the style of resonator already in the horn, and buying the pads that way is slightly cheaper. Above is a set of 2 style resonators: one is flat, the other cone. Below are the metal resonators I keep in stock.
The following is the process of installing plastic resonators. Using the iron, you melt the back of the resonator.
blank pad, conned resonator, resonator iron.
Heating the Iron
Melting the back
end result
Inhorn Band Instrument Repair 