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DuPont and “DuPont” connectors, and how to crimp them properly

107 点作者 pera5 个月前

10 条评论

johnwalkr4 个月前
I didn't see it mentioned in the article, but please don't add solder to crimped connectors "to be extra secure" even though it's common advice in hobbyist circles. Unless you're using PTFE or similar insulation, you will make the crimp to the insulation weaker, defeating its strain relief purpose. Worse, right at the point where the solder wicks to, there will a huge stress concentration, and all it takes is a couple of bending cycles to break the first strand. After that point there is zero strength there.
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bnjms4 个月前
This is the lovely type of page Google used to surface when you needed to learn something. This was the internet.<p>It’s different now. HN is the only place I know how to stumble on this type of thing now.
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throwup2384 个月前
Site is experiencing the hug of death so I can’t read it, but I just use these from the Japanese company Engineer Tools: <a href="https:&#x2F;&#x2F;www.engineertools-jp.com&#x2F;pa092021" rel="nofollow">https:&#x2F;&#x2F;www.engineertools-jp.com&#x2F;pa092021</a><p>Edit: hah yep they get an honorable mention. Definitely get the PA-20 or 21s, not the 09. They’re not perfect but they don’t cost an arm and a leg.
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OldGuyInTheClub4 个月前
&gt; If you can afford to use these connectors, you’ll also be able to afford to buy the appropriate tools to crimp them, even if only second hand – they are well worth it.<p>I&#x27;ve had a chance to use some well-maintained, calibrated crimp tools and there&#x27;s a satisfaction that I can&#x27;t quite describe. They feel substantial in the hand, the operation&#x2F;sound are smooth and calming, and the resulting crimp will never fail. In my student days I had to improvise with whatever pliers or grippers were available. It was excruciating and the end product was barely serviceable.
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alanbernstein4 个月前
I have an Iwiss tool, and it sort of works for me. My problem is that it seems to require three hands to operate: one for the wire, one for the contact, one for the tool. I have tried holding the tool between my knees, I found ways to delicately hold the wire and contact in place with one hand, and close the crimper with the other, but it never feels ergonomic. I often just end up using pliers instead.<p>It seems to me that these tools should be designed as tabletop or bench-mounted devices, so you can push the wire+contact in from the front with both hands, crimp, then pull out.<p>I must be missing something, because all the tools are this form factor, and I don&#x27;t see much discussion of the actual &quot;how to crimp properly&quot;, i.e. the physical actions. What am I doing wrong?
misthop4 个月前
Archive link <a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20241221235110&#x2F;https:&#x2F;&#x2F;www.mattmillman.com&#x2F;info&#x2F;crimpconnectors&#x2F;dupont-and-dupont-connectors&#x2F;" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20241221235110&#x2F;https:&#x2F;&#x2F;www.mattm...</a>
moudis4 个月前
I&#x27;ve been using the Engineer PA-21 and Hozan P-707 called out in the article for a few years, although I prefer the latter. Mostly crimping 4mm bullets and other common open barrel connectors (Sumitomo, etc.). Great tool at a pretty reasonable price.<p>One thing this article doesn&#x27;t seem to mention is pin release tools, which are invaluable if you need to repin or repair a connector. Most open barrel terminals have a small metal tang that retains them in their connector housing. A jeweller&#x27;s screwdriver can work in a pinch, but can mangle either the pin or the housing. I&#x27;ve been using Hero&#x27;s FR-150 set, but there&#x27;s no shortage of suitable options out there for whatever connectors you might be working with.
kbouck4 个月前
I read this (or similar) article when researching how to better crimp dupont connectors for mini arcade wiring.<p>I settled on the Hozan P-707 recommended in this article. A bit more expensive than other options, but it has worked really well for me. Every crimp is just right. Worth the extra money for me.
Kuinox4 个月前
I have a cheap crimping tool bough on amazon. I never manage to crimp the connector correctly. The part is too small, doesn&#x27;t hold by itself on the wire, etc...
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psyclobe4 个月前
Oh man this has been a never ending source of confusion for me, thanks for the post!<p>EDIT: Oh cool, I just need to spend ~300 dollars on a special crimping tool (HT-95) :\
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