Naturally the easy answer is to just splurge on e.g. the official Harwin, JST, and Molex parts and tools, but even if one finds the crimping tools used on EBay or so, that is still a lot of money ...

Wire stripping is a necessary part of any crimping operation, and some tools incorporate blades for this purpose. Crimping tool kits may extend this further with the addition of cable testers or ...

Crimping connectors onto wires requires the right tool, and the most important for ... wire gauge and not to squish the square female part of the connector.