[s_m_t]

Use a fume hood or extractor and really learn how to solder properly. It sounds like you are either running your iron too hot and/or you are trying to melt your solder on the iron and pass it to the joint. The pros use a TON of flux because it practically solves the oxidization issue and helps a lot with spreading the heat to where you want it to go. Half of your temperature issues can be solved by either preheating your boards or spot heating with a hot air rework tool.

[brcmthrowaway]

I also hate flux. Also seems chemically dangerous and horribly sticky.

[sitharus]

Flux in flux cored solder is rosin, rosin is distilled from pine sap and is a permitted food additive. It’s as a glaze on chewing gum and pharmaceuticals.

Rosin is also used on violin bows to increase friction, and it’s the white powder you’ll see gymnasts and baseball pitchers apply to their hands to improve grip.

Rosin vapour is a lung irritant, so avoid breathing it by using a fume extractor, and for some people it can cause contact dermatitis.

Yes it’s horribly sticky, that’s the worst part about it really. Isopropyl alcohol will dissolve it.

[ibash]

Electronics is not for you

[s_m_t]

You don't have to touch it or eat it ;)

[wileydragonfly]

Hog lard also works. Do you hate bacon, too?