
I can’t seem to crimp the terminals properly…
That’s because of the tool.
In the first place, you don’t adjust the crimping by how hard you grip.
It’s quite likely that the terminals or wires aren’t compatible with your crimping pliers.
Basically, we have to crimp with “universal tools.”
Wire outer diameters vary
Terminal (spade connector) manufacturers vary
Tools are universal products
There are tons of options.
Among all these, what I believe might be the strongest universal tool
is my favorite “IWISS HS-03B”
And now for just 2000 yen!!!


Crimping is complete in one go! ♪(*´ω`*)Whee!
Most standard crimping pliers require two crimps, right?
The large one and the small one.
This one can crimp in one shot = time saver.
Well, it does take a bit of practice though
The wire you’re crimping is hard to see, so practice before using it.
Once you get used to it, it’s just… a-m-a-z-i-n-g! ♪

The size is a bit large and heavy
Since it crimps in one go, it’s built to be sturdy.
If you’re doing 20-30 pieces a day, I don’t think you’ll get tired. (Our comparison?)
So let me write about how to use it.

It’s good to know the crimp width and length of the wire.
Well, most of them are around 5mm, so
remember “5mm” and you’ll be good.

5mm as is.
Or fold 10mm in half to make 5mm
It depends on the terminal’s opening.
If the opening is wide but the wire volume is small, it tends to be loose
Practice and adjust your own settings to get it right.

Check how far you should insert it.
If you don’t check this, you might crimp the insulation at the tip
or end up with poor electrical contact or a loose crimp that falls out.
Check first, check second.
If you think about it, spending just a few seconds to ensure safety down the road is cheap?


First, lightly grip the terminal with the crimping pliers. ♪
It will be locked by the tool, so you can let go.
Next, insert the stripped wire while watching how much it sticks out, and crimp.

Then squeeze hard to crimp it. (*´ω`*)
There’s no secret or trick.
Just squeeze.
Depending on the terminal manufacturer, there may be incompatible ones.
Since it’s a universal tool, adjust it accordingly.

Everyone gets the same result. That’s the importance of good tools.
Crimping shouldn’t have tricks or secrets.
*Though there are some minor ones…
With proper tools and equipment, anyone can do reliable work.
Start with reliable tools and you’ll be good.

Soldering. This is a matter of preference and style? (‘Д’)
I solder 100% of everything.
This is for “adhesion” and “reliable electrical contact.”
Once it’s like this, you can’t pull it out with pliers.
The wire will snap first.
But solder only a tiny bit
because it seeps into the wire and hardens it.
If you prefer more reliability, go for it!

Be careful with the dangerous flux!
Hakko SUSSOL-F
I’ve never seen a better flux than this.
*I haven’t experimented that much though
But this is for metals, so as is it will “corrode heavily.”
Neutralize it or wash it thoroughly.
In short, you can solder really cleanly, but cleaning and neutralizing are essential.
It adds more work on top of the hassle of soldering.
By the way, I do all that tedious work.
For better or worse, I want to avoid terminal electrical contact failures
because they cause mysterious problems.
With the mindset that Rome wasn’t built in a day, you’ll do well.
