Making a poor mechanical connection and hoping solder will hold it together is not good practice. I have seen many poor solder connections.

But I believe that was one of the main points of the original document, you wouldn't want a good mechanical connection masking a poor solder connection since the electrical connection is critical. A mechanically solid connection that has a cold solder joint is more likely to make it past initial inspection but will show up in later service.

Wire wrap was popular for awhile, I think it was pushed by AT&T/Bell as a very high reliability connection because when properly done the connector bit into the wire and kept this connection under tension. My Telefunken E1501 receiver has a number of the connections from the mother board to the front panel made using wire wrap. A lot of hobbyist tools were sold for wire wrap in the 1970s.

Rodger WQ9E

I built a few projects at work, including a major project, using the wire-wrap technique. After 30 years of daily use, the major project (a TTL based AM antenna pattern/transmitter controller) is still working. It is similar to point-to-point chassis wiring but done on perf-boards. Wire-wrap seemed to work well for one-of-a-kind projects.

Dave

I still have my wire wrap pins and tool...somewhere, as its been decades since I used it last.

Carl

If you find after checking every thing they said in posts and you radio still doesn't work check the coils. I had an SX28 a few years ago that would work when upside down but when turned right side up it quit. After many hours I found the slugs inside tubes were held in place by wax. One of them the wax melted and the slug was moving. turned it upside down poured in beeswax no more problem.