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Old 6th Apr 2021, 1:48 pm   #1
HECTOR63
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Default Amazon Molex Kit

Just taken delivery of one of these this morning and very impressive and helps a great deal for my needs on going
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Old 6th Apr 2021, 3:54 pm   #2
Scimitar
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Default Re: Amazon Molex Kit

Quote:
Originally Posted by HECTOR63 View Post
Just taken delivery of one of these this morning and very impressive and helps a great deal for my needs on going
But they are JST, not Molex!
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Old 6th Apr 2021, 5:22 pm   #3
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Default Re: Amazon Molex Kit

Yes I also bought one a couple of months back and agree it is good value, I did have to buy a suitable crimp tool to fit them.
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Old 6th Apr 2021, 6:14 pm   #4
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Default Re: Amazon Molex Kit

The key to crimping these tiny connectors is to make sure thet the two arms of the crimp area fold right down in the middle and crush the wire properly. A bit like a rounded "B" in cross section. Just squeezing with pliers leaves a very weak joint.
I laboured for ages trying to get a good crimp on these tiny connectors with pliers and finally gave up and bought the Engineer PA-09 crimper. A seeming over-expensive and simple tool. But it has been perfectly designed and made to do excellent crimps, and works over quite a range of the smaller crimp connectors. A good investment if you are making lots of these crimps.
And I suggest you don't make the mistake I used to make of then soldering the crimped joint "just to make sure". This guarantees that the solder wicks up the wire, making a nice fracture point a little way up from the crimp!
-Jeremy
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Old 7th Apr 2021, 12:23 pm   #5
HECTOR63
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Default Re: Amazon Molex Kit

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Originally Posted by Pamphonica View Post
The key to crimping these tiny connectors is to make sure thet the two arms of the crimp area fold right down in the middle and crush the wire properly. A bit like a rounded "B" in cross section. Just squeezing with pliers leaves a very weak joint.
I laboured for ages trying to get a good crimp on these tiny connectors with pliers and finally gave up and bought the Engineer PA-09 crimper. A seeming over-expensive and simple tool. But it has been perfectly designed and made to do excellent crimps, and works over quite a range of the smaller crimp connectors. A good investment if you are making lots of these crimps.
And I suggest you don't make the mistake I used to make of then soldering the crimped joint "just to make sure". This guarantees that the solder wicks up the wire, making a nice fracture point a little way up from the crimp!
-Jeremy
https://www.amazon.co.uk/ENGINEER-pa.../dp/B002AVVO7K

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Old 7th Apr 2021, 12:24 pm   #6
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Default Re: Amazon Molex Kit

Quote:
Originally Posted by Scimitar View Post
Quote:
Originally Posted by HECTOR63 View Post
Just taken delivery of one of these this morning and very impressive and helps a great deal for my needs on going
But they are JST, not Molex!
Just noted thanks for the heads up
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Old 7th Apr 2021, 12:33 pm   #7
Keith956
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Default Re: Amazon Molex Kit

A good guide to crimp connectors here: http://www.mattmillman.com/info/crimpconnectors/
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Old 7th Apr 2021, 3:56 pm   #8
HECTOR63
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Default Re: Amazon Molex Kit

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A good guide to crimp connectors here: http://www.mattmillman.com/info/crimpconnectors/
Yes that's definitely a great guide indeed and shows loads of options, surprising about the not so great write up on the Engineer PA09,but I guess its what works for the person with the job to hand.
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Old 7th Apr 2021, 4:20 pm   #9
merlinmaxwell
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Default Re: Amazon Molex Kit

40 Quid for a crimp tool, the last Molex one I bought (for work) was 300. I tend to harmonise (silly word for use the same) work and home connectors, I can borrow the tool (and get free connectors too), win win!
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Old 8th Apr 2021, 10:14 am   #10
HECTOR63
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Default Re: Amazon Molex Kit

Yes I agree somewhat but I personally have no problem paying the money for good tooling, likewise with crimping terminations for Hi end and esoteric hifi with eye watering costs of cables etc, the terminations have to be spot on every time. But shall still be looking to making a purchase of something that fits the bill and its only small scale hobby things and projects these days. Years ago when we used lots of crimping activities with Car Radio etc installation and auto electrical works some of those were a bit trial and error, but smaller and much more intricate things at this level do require more precision style tooling so long as it does the job properly.
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