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Soldering Wires – Here's a different way

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Re: Soldering Wires – Here's a different way

#3
That’s a neat looking trick, will have to see how well it works in practice. I can’t see it working too well if you need to feed the wire into a through hole.

My trick is to tin the joint and the wire, apply no-clean flux to either the joint or the wire (situation dependent), then bring the two together while reflowing the joint. Quite handy for soldering tight multi-pin connectors.

The real tip is buy flux, it’s just as important as solder.

Re: Soldering Wires – Here's a different way

#4
post #3

That’s a neat looking trick, will have to see how well it works in practice. I can’t see it working too well if you need to feed the wire into a through hole. My trick is to tin the joint and the wire, apply no-clean flux to either the joint or the wire (situation dependent), then bring the two together while reflowing the joint. Quite handy for soldering tight multi-pin connectors. The real tip is buy flux, it’s jus…

Agreed on the through-holes, and doubly agreed on the flux. All magic in soldering ultimately comes from flux.

The other way you can easily solder to pads is to use solder paste. Many people don't seem to realize that paste is good for more than just reflow. It's not as useful for situations like this, where you need a relatively large solder volume (so I'd also use your method), but it works quite well for smaller scale work.

Re: Soldering Wires – Here's a different way

#5
This looks like a good idea, but is the wire getting hot enough? Does the rosin work to dissolve the oxidization on the wire when the solder is being melted and sucked in by surface tension, as opposed to being melted by the wire directly? I could conceive of the rosin all ending up on the surface of the blob using this technique, not touching the wires.

Re: Soldering Wires – Here's a different way

#9
post #3

That’s a neat looking trick, will have to see how well it works in practice. I can’t see it working too well if you need to feed the wire into a through hole. My trick is to tin the joint and the wire, apply no-clean flux to either the joint or the wire (situation dependent), then bring the two together while reflowing the joint. Quite handy for soldering tight multi-pin connectors. The real tip is buy flux, it’s jus…

We much preferred rosin based flux in our shop. It flowed much better, made more perfect joints (no holes) and was much easier to clean after repairs.

Re: Soldering Wires – Here's a different way

#10
post #7

You shouldn't really lap solder wires to boards. They tend to pull the pads off the boards or crack. Better to use wire to board connectors or solder terminals.

No, you shouldn't lap join wires to surface-mount pads. But sometimes you have to. Just don't deliberately design something this way and we'll call it good.

(Through holes are fine. Mostly.)

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