Pickling Tongs
Pickling Tongs
The non-ferrous tongs used to handle work in a hot pickle bath
Pickling tongs are the non-ferrous tongs a bench uses to lift work in and out of a hot acid bath. The cardinal rule of pickle handling is that no iron, steel, or other ferrous metal touches the bath, and the tongs are the most-used tool that obeys that rule. Construction is copper, brass, nylon-tipped stainless, or chemical-grade plastic; whatever the material, the working surfaces in contact with the acid contain nothing that will react with it.
Why no iron
The chemistry is straightforward. Sodium bisulphate or dilute sulphuric acid in contact with iron or steel sets up an electrochemical cell that pulls copper out of any silver alloy in the bath and re-deposits it as a thin pink layer onto every surface in solution. A single pair of steel tweezers dropped into the pot for thirty seconds can copper-plate every piece of silver in the bath. Recovery requires polishing or a brief dip in a copper-stripping solution — manageable but irritating, and entirely avoidable with the right tongs in the first place.
Materials
Copper tongs are the traditional bench standard and remain in wide use. They are sturdy, hold their shape, and tolerate the bath indefinitely. The drawback is that copper-on-finished-metal contact can leave faint mark-points on a polished surface; for that reason, copper tongs are generally reserved for early-stage work and replaced with a softer option for finished or near-finished pieces. Brass tongs behave similarly and slightly more discreetly. Nylon-tipped tongs — usually a stainless body with chemical-grade nylon jaws — are the modern preference for finishing work because the soft tips do not mark the metal at all. Bamboo tongs are sometimes seen in studios that prize traditional materials; they wear out faster than nylon but are entirely benign.
Form
Most pickling tongs are six to eight inches long, long enough to keep the user's hand well above the rim of the pot and out of the steam. Some designs include a spring tension or a small locking mechanism to grip small components — earring jackets, ring shanks, chain links — that would otherwise slip free during transfer. The jaws are usually flat or lightly textured rather than pointed; a pointed tip can mark a polished surface or punch through a thin piece of work.
In use
The tongs live at the back of the bench beside the pickle pot. After lifting work, both the tongs and the piece rinse in a small dish of clean water before any further operation. A pair of tongs that has built up a film of pickle residue is rinsed and dried at the end of the day; the same pair of copper tongs will serve a working bench for years if treated reasonably. Bent jaws or a sprung hinge are signs to replace the pair; a tong that does not close cleanly drops work and is more nuisance than tool.
In the trade
A bench in steady use generally keeps two pairs on hand: a sturdy copper or brass pair for general retrieval and fabrication-stage work, and a nylon-tipped pair reserved for finished or near-finished pieces. The two pairs cost very little and save a great deal of polishing.