I have no words for this one and am just going to use Adrian’s description.
And now for something pointless and different: In this video I wash three C64 mainboards, set to relaxing and chill music. These three boards were found in a barn and donated to me by Desi in the “Retro Road Trip” video. Mostly an experimental video, I did it to show that a really good way to wash old computer parts is just to use soap, water and a scrub brush. Notice how the water changes from clear to a brown color through the video.