Cleans and keeps the solder points clean. Prevents oxygen from reaching the solder joint

I go by: If you are not sure you need a good one, buy the first one for cheap. Of you break it, buy a quality one. You obviously need it.

You could also ise a library. The ones I have used are free or almost free

I didn’t want to go in the details. My point was that sentences in the vercinity of 10 years for murder are common in Europe.

Yes, I can understand both views. It is simply a difference in culture, I guess…

I would say ~10 years is normal for a murder in Germany and other European countries. I don’t know about current Russia but here the idea is jail time should lead to rehabilitation and a bit of punishment. In the US it is much more focused on punishment.