I'm going to clean a Sun 3 keyboard today. Its keycaps are filthy. The strategy I've used in the past for the keycaps is: * Goto the kitchen. There is a double sink there. * Fill one sink with hot, soapy water and the other will cold, non-soapy water. * Dump the keycaps into the hot sink and let them soak for a while. * Slosh the keycaps around a bit. * Transfer the keycaps to the cold water. If necessary, wipe grime from each one as it is transferred. * Arrange the keycaps for drying. Dry them with a hair dryer. * Test for dryness by tapping a table with a keycap. If any water drops appear on the table, repeat the previous step. I have a dishwasher, but I don't trust it.