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Anyone using a FOSS-friendly robot vacuum?
(lemmy.ml)
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Damn, made me chuckle
Anyways, going by
When you press the solder against the iron's tip, it should get wicked by the tip, and remain there until you press it on some wire/component leads.
If the solder beads up and slips away from the iron, or beads up and forms a blob at the end of the solder wire, it's oxidised and you probably need to get a new tip. It needs to be shiny and metallic.
The tip needs to be regularely cleaned while soldering by brushing it on a wet sponge, and never let the iron cool down without some solder on the tip to prevent oxidation.
also, FLUX FLUX FLUX