How are you supposed to know what crimp tool to use for a given connector?
This is not for professional use cases, but I use pliers in the DIY situation. Either tiny little ones, or the really big 10&quot; ones. I form the metal onto the wire just sufficiently enough to retain it. I then flux and solder it on with an appropriately sized iron.
Whilst perhaps not approved for aeronautical/military use, and slow, the advantage is that I can 'crimp' a large range of terminals with common general purpose tools.