Precision Universal Crimping Tool for Crimping Micro Crimp pins. Made in Japan. ENGINEER pa-09

Another excellent quality tool from the Japanese 'Engineer' company.These are a pair of manual crimpers for individual connection pins, such as Jst or Dupont pins. They are spring opening, with a catch to keep them closed when not in use. They come on a blister card, which has some helpful instructions and sizes on the back. (Photo).There is nothing fancy about them.There is no ratchet mechanism, no holding mechanism. All you get are a pair of manual grip crimpers. (Photo).Fortunately, none of that is really necessary and these work extremely well.In fact they are the best I've used.You place the pin in the relevant sized hole and squeeze. You do the conductor first, then move the pin to crimp the insulation.It works extremely well. Just make sure you use the right size hole.It can be fiddly, so it's a massive advantage if your pins are still attached to their manufacturing strip.You can still crimp the pins if they are individually loose, but it is a lot more fiddly.'Engineer' do 3 different sizes of these crimpers.I personally think that these, the PA-20, are the most useful. I have never had to use a size bigger than 2.3mm or smaller than 1.6mm in all my years, so, I can't imagine needing a different pair.Your circumstances may be different, but if you are crimping standard 2.54mm pitch pins, these are the ones you want.Overall, these are a great set of crimpers, that work really well.Yes, they are a little expensive, but with nothing to go wrong, there is no reason why these shouldn't last a life time.Recommended.I hope you found this review helpful.

I have been using this now for a couple of cheers to crimp JST pins onto ribbon cables, I love the JST connectors but I really do not like crimping them.There's a definite "knack" to using this tool, and even having crimped thousands of these, I still find them very fiddly to crimp.The JST crimps have 2 tab sections, one is used to crimp to the insulator ensuring that the cable is held in place, and the second is the actual terminal itself.The method that works for me is:1.) bend the insulator tabs inwards very slightly with needle nosed pliers, if you don't do this, you won't be cable to perform the actual crimp.2) place the crimp into this tool, I rotate the tool in my hand so the legend is facing away, I need to do this is ensure that I'm only crimping the insulator and not the other tabs, I gently close the tool slightly to grab the crimp, then rotate the tool back so the legend is visible, the back of the connector is now facing me.3.) As I'm looking at the rear of the crimp, I insert t he cable into the crimp and look at the other side to make sure that I haven't pushed the cable in too far or not enough, it should be positioned so that the cable insulator is touching the outer tab, and the conductor is touching the inner tabs.4.) very carefully I close the tool to perform the crimp.At this point, you might get a good crimp, or, you might end up with the crimp rotating in the tool jaws, in which case you have to reset everything and try again, the final problem you may get is that the tabs just didn't fold properly, in which case you need to remove the crimp/cut it off/trim the cable and so on.If the crimp was OK, then you repeat the process again, and crimp the inner tabs, just make sure that you check that you are not crushing the end of the crimp, if you do the pin won't be usable.Other issues also include the crimp bending.It works reasonably well most of the time, but sometimes they can be infuriating, especially when the tabs don't fold properly.This is a common issue I've read with this tool, but this is one of the best tools for these crimps, so I kind of just live with these issues.Take your time, and inspect everything before you make the actual crimp.It's also well worth having a multimeter set to "beep" mode, after crimping you should check that the cable is ok, sometimes the cable may more and the conductor might make no or poor contact.

The tool definitely works but there is definitely a bit of practice required . Some of mention it is basically a 2 step process to crimp the conductor and insulator lugs - I think if perfected it could be a 1 step .As an alternative to a £350 tool elsewhere it is a sound investment !

It's definitely worth using a proper crimp tool than just making do with pliers. These a good quality and it's easy to get a good crimp on a variety of connector sizes.

Perfect tool for crimping connectors. Well made, pressure is controlled by you not by a ratcheting mechanism - which is what you want. These haven't failed me once.I see some people suggesting you crimp the connectors holding the insulation first then do the wires.Don't do it like that.1) Put the connector with the wire crimps in the centre in a suitable slot eg 1.4mm for JST-XHThe fins for the insulation should be sticking out and shouldn't be in the crimp at this point.2) Insert the wire so that the insulation is just level with the inner part of the outer wings/fins.3) Crimp.4) Pinch the insulation wings/fins slightly to narrow the gap a little - finger pressure is fine at this point.5) Carefully move the wire and crimp to the appropriate slot (1.9mm for JST-XH) with the outer insulation wings/fins in the slot.6) Crimp again.Open the jaws and take out your newly crimped wire. Using this method you can pretty much guarantee success every single time. I've used these for Dupont connectors and JST-XH with great results.If in doubt, watch the video in the listing it's not marketing fluff it shows you exactly what to do.Yes they cost a bit more but they are, honestly, worth it.

If you want to crimp some jst connectors,then get this crimper.Just ben delivered and I’ve done a couple already.Perfect.