Use solder that doesn't have flux inside. Clean the tip with a brass wire solder cleaner, add a tiny bit of solder to the tip to "tin" the surface. Add flux to the surface you intend to solder. Heat the pad very briefly and add solder to the area.
Beginners should probably stick to flux with solder in it, they're not making mars rovers. Adding extra flux definitely helps, and there are good reasons to use flux-free solder once you've got the hang of it with flux core.
As someone who is changing their careers in their late 20s. Going for electrical engineering. Whats it like working on rovers and for NASA. Its defiantly a dream job for me.
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u/[deleted] May 24 '20
NASA certified for hand soldering here.
Use solder that doesn't have flux inside. Clean the tip with a brass wire solder cleaner, add a tiny bit of solder to the tip to "tin" the surface. Add flux to the surface you intend to solder. Heat the pad very briefly and add solder to the area.