Confessions Of A Crimpoholic

Hi, my name is Dan and I’m a crimpoholic.

Honestly, I didn’t know I was a serial abuser of crimping tools until this weekend. I’ve been working on a small solar power system, and on Saturday I found myself struggling to get the BMS installed on the battery. I bought a Bluetooth dongle to connect the BMS to a smartphone app for checking the individual cells of the battery. I assumed it would just plug right into the UART port on the BMS, but alas — different connectors. So off I went to my bench, looking for a sensible way to make the connection.

My first thought was to simply log the connector off the dongle and solder the leads to the traces on the PCB right below the UART port. But then I saw that the pins in the port looked like 0.1″ pitch, so I rummaged through my stash to see what I could find. To my surprise, I had not only a kit of 0.1″ female crimps and housings, but I also had the crimping tool for them! I had no memory of making the purchase, but I thanked my lucky stars that I did, and got on with the job.

The story would end right there, if it weren’t for the nagging feeling that my good fortune meant something more. As I worked on my project, I made a mental catalog of the specialty crimp tools I have. Then I wandered around my shop and my garage, collecting every crimping tool I could find. Rounding them all up and laying them out, I had the unavoidable thought: Man, you have a problem!

The full collection is shown here — I think; something tells me there are more tools lying around that I’ve forgotten about. But even still, what I managed to find is a pretty impressive collection. I even threw in some “crimp-adjacent” tools, like the red-handled trio in the lower left, which includes the OG crimper-stripper-cutter-bolt cutter, a jack-of-all-trades tool that is equally bad at every one of those jobs. But it’s where I started, and the tool had been with me for decades, so it’s earned a place of honor.

For the most part, though, I’ve moved on to ratchet-action crimp tools. I find these superior in every way to simple crimp tools, especially since they can’t easily over-crimp a connector. The blue-handled tools in the black case are my go-to crimper these days, even if the crimp connectors included in the kit are a little on the crappy side. Right below them is a ferrule crimping set, which I purchased immediately after writing an article extolling the virtues of ferrules.

The yellow case is interesting. When I got started in ham radio, I figured I’d invest in the tooling needed for Anderson PowerPole connectors, the de-facto DC connector in the amateur radio world. The tool standing up vertically takes care of those crimps, but the other tool is — a good question. Like most ratcheting crimp tools, it has interchangeable dies, and there are spare sets in the kit that are for PL259 connectors — also handy for amateur radio — but I don’t think the die set in it is what it came with. I think it might be for crimping the really big Anderson connectors, which I needed when I wired an inverter into my car. But that’s just a guess, so if you recognize the die, sound off in the comments below.

My most recent purchases are the two kits are the far left, both of which are specific to my solar power endeavors. The lower one is for crimping lugs onto battery cables from 8AWG to 2AWG, which is hard to do with anything other than a specialized tool. Just above that is a nice kit for making solar cables with MC4 connectors. I actually haven’t even had a chance to use that one yet — but it’s nice to know I have it, in case I ever need it.

And I think that’s the main lesson behind this somewhat extravagant collection of specialized tools. I really hate trying to make do, especially when it comes to critical connections. And when you’re talking about connections that might carry upwards of 100 amps, you really shouldn’t be fooling around. I can’t count the number of “how-to” videos I’ve seen on YouTube that try to convince you not to waste money on specialized crimp tools — just smack it with a hammer, squeeze it in a vise, or even just slobber it full of solder.

None of these seem like great ideas to me, especially after reading Maya’s recent article on the dangers of substandard crimps. And so when it comes time to incorporate another type of connector into my projects, chances are I’m going to buy the right tooling to go along with it. After all, while most of these tools aren’t exactly cheap, they aren’t going to break the bank, especially when you consider the price of failure.

So maybe in the end, being a crimpoholic is more feature than bug.