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The OP uses single stranded wire but the solder blob on the PCB creates far more surface area contact for heat transfer from the iron which makes a large differ
by akiselev 4y ago
The OP uses single stranded wire but the solder blob on the PCB creates far more surface area contact for heat transfer from the iron which makes a large difference with stranded wire. When you're soldering hundreds of connections, the time savings from not having to pin the wire against a solid surface or clip it in place is substantial.
The bigger problem is that all the rosin flux in the solder will have evaporated, likely making the joint very weak. Most DIY projects lack any form of strain relief so it's a double whammy for any wire that will shift around.
- FpUser 4y ago>"The bigger problem is that all the rosin flux in the solder will have evaporated" But the OP specifically adds short pieces of solder to the pads before soldering wires. When they finally lay the wire and start heating that solder piece might have just enough flux in it. Alternatively one could just smear some flux on the pad before laying wire. Still I am not convinced this particular way is of any practical advantage.
- akiselev 4y agoFlux helps break the surface tension between solder blob and wire so I really doubt the flux in the unmelted solder would have a path to flow to the wire. But yeah, my solution is to just dip the wire in a jar of flux as I’m stripping and twisting them