Why, when soldering, tearing off the tip from the solder point, does the tail follow the tip?

Question

Electronics

To the previous question about soldering.
I began to solder this board with a needle-shaped sting of the microcircuit. It turned out satisfactorily. Solder lays down evenly without jumping adjacent legs. Then I soldered the resistance SMD with a spatula, some turned out with tails, you open the sting and a web of solder stretches behind it and freezes with a sharp spike. Tried to change the temperature does not help, added soldering flux the same thing. Why doesn't it spread like a hemisphere?

Answer 1

This happens because the solder on the component board cools faster than the part that is reaching for the tip.
To avoid this effect, the contact point must be heated to such an extent that when the tip is retracted, the solder under the action of its own weight has time to return to its natural shape due to surface tension and gravity.
The alternative is to use a tip that the solder doesn't stick to at all. There are such. Of course, supplying solder and flux becomes more difficult, and this is where solder paste comes in handy. Well, where there is solder paste, then it is not far from the soldering dryer.
You can also buy this crap https://www.aliexpress.com/item/1005003523148728.htmland solder all the components together. It doesn't cost that much. If you have a board made correctly, then the components in an inverted state will be held due to surface tension forces.

Answer 2

Try changing the solder to normal =)