How To Clean Solder Flux

Wipe any excess flux off your fingers or brush before soldering.

How to clean solder flux. Flick away excess by flipping your wrist two or three times. First sprinkle the piece with baking soda then apply a small amount of dish soap to the piece. Then use a gentle scrubber or a cotton swab to wipe it away.

Following the reflow process the flux leaves a small amount of residue around the various solder joints. To remove solder you must use a desoldering tool in conjunction with a soldering iron. The most common way to clean flux residues from a repair area is to saturate a cotton or foam swab with isopropyl alcohol or another cleaning solvent and rub it around the repair area.

Soldering flux is only corrosive once it is heated up and in its liquid form. They come in aerosol cans like hair spray or shaving cream. If you choose to use a brush do it only on the solder.

The fluxes in most of todays no clean pastes contain up to 60 percent solids. Repeat the cleaning step using the clean portion of the wipe until the board is clean. Cleaning the glass and solder with a flux remover and warm soapy water is a great start.

Never allow solvents or water to drain into connector body. Use a small paintbrush or your fingers to scoop up a small amount of soldering flux. If there is a significant amount of flux left on the piece or dirty solder consider using a soft brush to help with scrubbing.

Of baking soda with enough warm water to make a paste. Flux and whatever it picked up from soldering yes there will be a difference. The dissolved flux residue sticks to the wipe and is therefore not spread around the board.