I was hoping that this would have actual soldering tips, and not focus so much on weird old-timey connections last seen when coonskin caps were in fashion, but I guess the photos are useful.
If I were relying on a soldered part to keep me alive in a flimsy metal bubble floating in the remote sub-arctic airless radioactive void of space, I wouldn’t want the joints to be done like that either. It’s pretty obvious how it could go invisibly wrong. However, I will be doing that very thing with my future flashing-light boards. (Along with many other things NASA wants me to reject).
