Older Builds and Lessons
You need to use the right crimping tool to crimp wire terminals.
There are different crimpers for insulated and non-insulated crimp terminals. There is a proper terminal for every application whether it be a ring terminal, fork terminal, spade terminal, bullet terminal, butt splice, etc.
Items used in this video:
Wire Pre-cut, Stripped, and with Terminals Installed https://www.theautomationstore.com/wire-cut-and-stripped-to-length-mtw-tinned-copper-type-mtw-ul1015/
Insulated and Non-insulated Crimper https://amzn.to/3rmW6lw
Insulated Terminal Kit https://amzn.to/3d76x7F
Non-Insulated Terminal Kit https://amzn.to/3ro2U28
The above links make these videos possible. Please use them!