How To Make Soldering Flux
This is an aggravating problem and the best solution is a good solder paste that is from a volume dealer.
How to make soldering flux. Add approximately 250 ml 1 cup of water to the ingredients in the pan. Fluxes can be made from hydrochloric acid zinc chloride or rosin. Flux is a must have product when doing any electronics work especially for surface mount parts.
To tin the tip with solder apply solder to the tip of the iron when it is hot. This leaves a clean metal surface to which the solder can bond. Touch the already hot soldering iron with the soldering gun onto the wire to heat the cross-section.
Finally the acid removes oxides by converting them to soluble metal salts. Flux is a substance that comes in powder paste and liquid forms. Flux is used in soldering to remove oxides from the contacts of the parts to be soldered together.
DangPro shows you how to create your own solder flux. Stir the juice in the container for 10 seconds with the wooden spoon. After you have the flux-rosin tea simply take a syringe and draw the liquid flux into it staying away from the vasoline-like goo part.
Any type of flux that you have will work when soldering pipes together. Place the strainer in the kitchen sink for washing later. Trying to use a solid core solder without flux will result in a practically useless joint.
I found this great video on making your own flux for soldering. Solder flux is a kind of chemical used in Automatic PCB Assembly and Hand Soldering. It removes oxidation from the surfaces to be soldered.