Dog, toddler, or drunk buddy ever eat the volume knob off your A/V receiver? It happens. Print a new one. Printed in natural so it contrasted for the picture, but my installed version is black to match the receiver. First design ever (from 8/12/2014). See time-lapses of the things I print here: https://www.youtube.com/channel/UCQ9nW8XQAPWKGGKRd9LFQNQ