When it no longer wets with solder after cleaning and re-tinning, when the plating is pitted or cracked, or when heat transfer has clearly dropped. Keeping the tip tinned, cleaning it with brass wool and using sleep mode make tips last longer.
Soldering tips are consumables, and their condition changes how easy every joint is.
Signs a tip is worn
No longer wets: solder beads up instead of flowing over the tip even after cleaning and tinning. Pitting or cracks in the plating. Blackened oxide that does not come off. Poor heat transfer, with joints taking noticeably longer.
Care that extends tip life
Keep it tinned: leave a layer of solder on the tip when resting and switching off. Clean with brass wool rather than wet sponges alone. Use sleep mode or turn the iron down when idle. Avoid excessive temperatures. Never file a plated tip.
Recovering an oxidised tip
Tip tinner products, used as their makers describe, can restore wetting on lightly oxidised tips. Heavily damaged tips are replaced.
Choosing replacements
Tips follow a series tied to the iron or station. Buying by the station’s published tip series avoids poor fit and poor temperature control. A chisel tip for general work and a fine tip for small parts cover most hobby soldering.
Questions makers ask before buying
Why should tips not be filed or sanded?
Tips have a thin plating over copper. Filing removes the plating, and the exposed copper dissolves into solder quickly, ruining the tip.
Does a higher temperature wear tips faster?
Generally yes. Using the lowest temperature that makes good joints, and sleep mode when idle, extends tip life.
Last reviewed 15 September 2026