Ethan said >> If there are any special 8/S lightbulb housings that were plastic, I'm happy >> to CAD them up and 3D print... > > Nope. That's now how these worked. The bulbs had "flying leads" > coming out of the glass, no bases, and the light barrier was a bit of > MDF with holes in it (the MDF is visible in at least one of Guy's > photos). The bulbs just hovered over the PCB and just hung loose in > the holes in the MDF.
Ah! ok thanks for clearing that up. It makes me wonder if the 11/15 is much the same. I have not got to looking at it properly, but I am sure it has a similar MDF base for the bulbs. > > Later PDP-8 models used "bi-pin base" bulbs that had a > factory-molded-on base and a pair of sturdy pins. Sounds very /360-ish :) > > There were plastic mounts by the early 1970s when DEC switched to > LEDs. I've seen them in the PDP-8/M and the PDP-11/70, among other > machines. There's a single and a triple shape. And also, as I have just found out, a 6-LED shape in the 11/05. I had already drawn up the 3-LED mount for the 11/03 (https://www.thingiverse.com/thing:2829191) but until I unscrewed the switch board from an 11/05 console a few minutes ago, found it actually has three 6-LED mounts and a single. I'll revise that thing shortly. Steve.
