^ While I agree that many of the methods being discussed are perhaps less than ideal, it is difficult to argue with results. I have crimped many battery lugs (hundreds) using "alternative" methods - most of which are in a high vibration, moderate load environment - and to the best of my knowledge I have not had a single failure . A terminal crimper with a 4 digit price tag is not necessary for most of us. I can appreciate such an item for marine and aviation applications where a failed crimp may very well endanger lives and thus must be engineered to perfection, but common sense and critical thinking will get most of us by just fine.
I apply many of the same techniques as your link when making my expedient crimps.
Conversely, I have seen crimps fail that were made using a correct tool, but inadequate attention to detail. That is to say, the most expensive tool is ineffective if not utilized correctly.
