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DIY Male headers?
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DIY Male headers?

by Electrumpet on Wed Apr 24, 2019 10:06 pm

Hi,

I'd like to make some custom headers with long pins and I was looking for the raw material to make such pins and could not find anything on the net. They need to be pretty long...

Maybe somebody knows of a place where I could get such material (0.75mmx0.75mm square conductive rods) or maybe this is a product that Adafruit would like to add to their assortment?

Best, Hans.

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Re: DIY Male headers?

by franklin97355 on Thu Apr 25, 2019 12:27 am

How long do your headers need to be?

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Re: DIY Male headers?

by Electrumpet on Thu Apr 25, 2019 3:01 am

header.jpg
header.jpg (51.96 KiB) Viewed 161 times


Difficult to say exactly. I have to bend them around two corners. I guess the longest length about 6 or 7 centimeters.

Best, Hans.

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Re: DIY Male headers?

by adafruit_support_mike on Fri Apr 26, 2019 2:20 am

18-gauge wire has the same diameter as the across-the-flats phosphor bronze wire used for male pin header: 0.040"

To turn the wire into header, cut a piece about 2' long, grip it with pliers at both ends, and pull. The wire will get about 5% longer and slightly narrower, and in the process the copper will work-harden.. the microscopic crystals in the metal will start pushing against each other, trapping force within the structure of the metal.

That makes the wire straight, and much stiffer than it was before. They won't have as much tendency to bend or fold over when you press them into a female header.

Be quick when you solder them. Heating copper anneals it.. the heat allows the crystals to change shape and release the force created by work-hardening the wire.

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Re: DIY Male headers?

by adafruit_support_bill on Fri Apr 26, 2019 6:12 am

You can also find 1mm (0.039") brass rod at hobby shops, or on-line. This will be a bit stiffer than the copper.

The K&S Metals catalog number is 9861.

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Re: DIY Male headers?

by Electrumpet on Fri Apr 26, 2019 6:56 pm

Thanks.

I had thought about brass rod but I had the impression that the headers I buy are normally stiffer then brass rod but that might be due to their mostly short size and not every brass rod is equally stiff as well. Round rods seem to be cheaper but I was asking for square rods because they mostly have more 'hold' in the female headers. The size of the square headers that I buy is mostly 0.75mmx0.75mm. So maybe you are right and a slightly larger round rod wil just do the trick. I will buy and try.

best, Hans.

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Re: DIY Male headers?

by adafruit_support_mike on Sat Apr 27, 2019 4:13 am

Brass work-hardens the same way as copper, and is usually sold in an annealed state.

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Please be positive and constructive with your questions and comments.