Solder wick that actually pulls the bridge

The braid sits in your drawer until it doesn't

You've shorted two TQFP pins. The iron's hot, you've got braid somewhere in the parts bin, and you're about to learn whether you bought the right width three years ago. Desoldering wick—solder braid, if you prefer the less vivid term—removes bridges and lifts parts when a pump won't fit. It works by capillary action: flux-soaked copper pulls molten solder up into the weave. But only if you stop treating it like thermal tape.

Width dictates whether you chase the solder

Narrow braid (1–2 mm) fits between SOIC pins and works for single-joint cleanup. It heats fast, which matters when you're working near a plastic connector. Wide braid (3–4 mm) suits larger pads—barrel jacks, TO-220 tabs, anything where the thermal mass fights you. Matching width to the solder volume means you're not chasing a blob across three pad diameters with a ribbon that can't wick fast enough.

If the braid's too narrow, you'll move solder around instead of removing it. Too wide, and you're heating more copper than necessary, waiting for the far edge to come up to temp while your target pad cools. Buy a spool of each and label them; future-you will appreciate the honesty.

Fresh flux beats old braid every time

Braid ships with flux, but it dries out. If your spool has been open for six months, add fresh flux before you press the iron down. Rosin paste works; so does liquid if you can control the spread. The flux reactivates the weave and improves thermal transfer between iron, braid, and solder.

Without it, you're relying on oxidized copper to wick oxidized solder. The braid will discolor, the solder won't flow, and you'll press harder—which doesn't help. Clean residue properly afterward or accept the haze on your next photo.

Heat the braid, not the board

Place the braid over the joint, then bring the iron tip down onto the braid at a shallow angle. You're heating the copper mesh, which heats the solder. Hold pressure until you see the solder wick upward—usually one to three seconds. Lift the iron and braid together while the solder's still molten; if you wait, you've soldered the braid to the board.

If nothing happens after four seconds, pull off, add flux, and try again. Grinding a cold iron into desiccated braid teaches you nothing except that your tip needs retinning.

Cut behind the saturated section

Once a segment of braid fills with solder, it's done. Snip it off and move to fresh weave for the next joint. Trying to reuse a saturated section adds thermal mass and loses capillary action. Keep flush cutters within reach and don't hoard the spent braid—throw it in the scrap copper jar if that ritual comforts you, otherwise bin it.

When the pump makes more sense

Desoldering pumps (solder suckers) excel at through-hole work where you need to clear a plated hole entirely. Braid works better for surface-mount cleanup, drag-soldering corrections, and anywhere the pump nozzle can't fit. If you're pulling a DIP IC, use the pump. If you've created a solder bridge across 0.5 mm-pitch pins, reach for the braid. Both tools earn their drawer space; neither replaces the other.

Keep braid in a sealed bag with a desiccant pack. Mark the purchase date if you're the sort who forgets when spools were opened. The next time you bridge two pins at midnight, you'll know exactly which width to pull and whether it needs flux. That's the entire job.