Tamper cleaning station

If you want to work cleanly, you should also clean the tamper on the underside of the tamper base and on the edge from time to time.
This simply happens when you put the tamper down here and turn it briefly through the brushes that are inside before you start tamping again, then your tamper is always clean and doesn't bring any old ground coffee residue into the new tamping process.
Not cheap! Turned from solid aluminum round stock and with special turned nylon busts inside.