What is pickle in jewellery making?
By Jared James · Last updated 21 May 2026
Definition
Pickle, in jewellery making, is a mildly acidic solution used to clean metal after it has been heated for annealing, soldering or casting. Heating metal causes oxides and fire scale to form on its surface, which must be removed before further work or finishing. The metal is placed in warm pickle, where the acid dissolves those surface oxides quickly and leaves the metal clean. Sodium bisulphate, sold under names like Safety Pickle, is the most common modern choice; it has largely replaced older solutions based on sulphuric acid.
Frequently asked questions
- What does pickle do to metal?
- It removes the oxide layer and fire scale that forms when metal is heated, leaving the surface clean and ready for the next stage of work. Without pickling, oxides on the surface can interfere with further soldering and make finishing much harder.
- What kind of pickle do jewellers use?
- The most widely used modern pickle is sodium bisulphate, available as a granular powder that dissolves in water. It works well at a warm temperature and is much safer to handle than the dilute sulphuric acid solutions used historically.
- Is pickle safe to use at home?
- Modern safety pickle solutions are significantly less hazardous than old-fashioned acid pickles, but they are still acidic and need careful handling. They should be used in a ventilated area, kept away from skin and eyes, and disposed of responsibly rather than poured down the drain.
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