I'd need to build a test fixture with very small pogo pins (1.27 mm spacing between the closest pins). I've seen fixtures before that use very long, very thin pogo pins almost exactly like this one in the drawing - 0.5mm diameter:
Now the question: how the heck does one attach anything to the base of this? The base is just a round pin, no solder cup or anything, there is really nothing that a wire can attach to, and I don't think soldering to a PCB through hole is the usual approach either.
I've seen an array of these stuck through a piece of drilled fiberglass (I think just press-fit through) but I never saw what the electrical connections looked like underneath.
What's the usual approach to building test fixtures using these types of very small pins? How to connect electrically and how to hold them in place?