Rosin flux is for electronics and copper, gold, and silver. (NEVER use acid flux on electronics. You WILL regret it. It's a mistake that keeps on giving.)

Disclaimer: This is an experiment and is not time tested (I've been soldering since 1962) so use at your own risk. Some solvents can damage plastics and other. Most solvents are toxic to breath or by contact, take proper precautions. Soldering carries the risk of burns, fire, etc. Learn first or don't do it. IPA (isopropyl alcohol or isopropanol) is flammable and poisonous. Use proper precautions.

NOTE: The commercial flux in the video is NOT rosin based, I just needed a working sample to compare the prepared flux to for ability to flux and cleanliness.

PER THE INTERNET ======================================
Ratio is 1g rosin to 10 ml alcohol (99% IPA, better if not denatured)

COMMERCIAL FLUX =====================================
Is 2% solids.


DATA =================================================
Isopropyl alcohol weighs 0.78509 gram / cc
10 cc would be 7.85 grams
2% of 7.85 grams is 0.157 grams so 1 gram is about 6x too much