How to Remove Silver Solder Flux

Combine the vinegar and salt in a small saucepan. Heat over medium heat until the solution is hot but not boiling and the salt has dissolved. Reduce the heat to low. If you plan to use the pickling solution over an extended period of time, transfer it to a small slow cooker set on low to keep it warm.

Lower the piece into the hot pickle solution. After a few seconds, lift it out using tweezers. Scrub lightly with a toothbrush and submerge into the pickle solution again, if necessary. For large pieces, apply the pickle solution with a toothbrush.

Rinse with hot water and dry with a microfiber cloth.