Just a a reminder for the old pros... and a helpful tip for you new racers.. .Most soldering irons last a long time. But the effective use may end within only a couple of years. The heat capacity degrades over time slowly.
Your soldering on a pinion. It seems like you're not having an easy time. The efficiency of the heater may be bad. Are you having trouble getting a motor out of a flexi chassis? Maybe the irons output has degraded beyond its usable life.
If your liquid flux is several years old, you may want to get a new bottle.
Is the tip on your iron worn out? Does it have a hole? Many irons just need a new heater or heater element to be like new.
Hakko and Weller irons are worth repairing in most cases. Or just treat yourself to a new iron. Keep the current iron as a backup?
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