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Copper

A soft, reddish metal with the most dramatic patina behaviour of any common material in the hobby, plus genuine weight.

Density / weight impression

Around 8.96 g/cm³ — dense and heavy, similar to brass.

Machining behaviour

Soft and machinable, though it can smear; gummy compared to brass.

Surface behaviour

Patinas readily into browns, blues, and greens — naturally or forced. Polishes to a bright rose-gold.

Feel in hand

Cool, heavy, and smooth, with a warmth to the colour that sets it apart.

Sound influence

Bright, though slightly softer than brass.

Finish compatibility

Polished, raw (patinating), distressed, forced patina.

Collector appeal

High for collectors who want a finish that visibly lives and changes.

Common object types

Spinners, coins, accent components.