I built a new Elf switch panel, but this time I used two printed circuit boards for the switches and the bezel.
The bezel PCB has white soldermask with black silkscreen. The next revision will have black soldermask with white silkscreen, and the legend font, weight, and positioning changed to more closely match the original Elf photo in Popular Electronics. https://www.flickr.com/photos/22368471@N04/sets/72157667455777465 The 20-pin header has the same pinout as Bob Armstrong used for the Spare Time Gizmos Elf 2000, but I don't presently have an Elf 2000 to test it with. For now the main intent is to use the panel for a new version of my FPGA Elf. I'm not sure whether I got the wiring of the LOAD switch correct; the Elf 2000 documentation refers to normally closed and normally open contacts of that switch, but for a toggle switch that doesn't make any sense to me. If anyone can tell me which pins of the Elf 2000 connector are grounded when the load switch is active vs inactive, that would be appreciated. The 20-pin header should have been right angle; since I only had a vertical header on-hand, the ribbon cable had to be plugged in before the switches were soldered in place, and the switches are not flush with the switch PCB. The toggle switches and push-button switch are C&K 7101SDV3BE and 8125SDV3BE, respectively, which have 0.42 inch actuator, 0.28 inch threaded bushing with keyway, vertical PCB mount with V-bracket, gold contacts, chrome actuator finish, and nickel bushing finish. These particular C&K switch variants are not very common, so I'll probably use different ones in the future, without the V-bracket. I don't yet have enough of the red and white toggle caps, which are C&K 896803000 and 896801000, respectively. The red button for the push-button switch is C&K 801803000.