8 Sep
2011
8 Sep
'11
21:35
2011/9/7 ninnghizidha <ninnghizidha@gmail.com>:
Wizard sagte mal vor ein paar Jahren, dass er kalte Lötstellen mit bloßem Auge erkennt. O_o
I don't know what exactly he means or what happens on the chemical level, but heated lead oxidizes when cooled down. this also depends on foreign materials that are used to create clean solder joints. probably, it's a subtle change to gray. H