Copper and brass cutting and engraving

What's the difference between copper and brass?

Copper (Cu) is a pure metal — soft, an excellent conductor of both heat and electricity, red-pink in tone. Brass is a copper-zinc alloy, known locally as "latun"; it is harder and reads gold. Tombak is not a synonym but a specific high-copper grade of brass. Both are routinely confused with bronze, which is copper plus tin and a different material entirely. All three are non-ferrous metals, valued for a warmth that carbon and stainless steel cannot reproduce.

• Copper (Cu) — red-pink, soft, highly conductive
• Brass (CuZn) = latun — golden, harder; tombak is a high-copper grade of it
• Bronze (CuSn) — copper plus tin, a separate material
• In Georgian, ლითონი and მეტალი both simply mean metal

What thickness of copper and brass can be laser cut?

Copper and brass processing depends on alloy, coating, reflectivity and thermal conductivity. Polished and matte sheet cannot be assigned one guaranteed thickness limit. Send the material grade, thickness, surface photo and drawing. Cutting feasibility and edge requirements should be confirmed from those details, with a sample assessment where needed.

• Exact alloy grade
• Thickness and sheet dimensions
• Surface coating or sample
• Drawing and required tolerance

When does engraving beat cutting?

Engraving works on the surface rather than through the full sheet thickness. A thick object may therefore accept a logo or text if its dimensions, shape, coating and placement in the machine are suitable. A through-cut outline requires a separate feasibility assessment.

Where are copper and brass used?

These materials are often chosen for decorative plaques, awards, numbers, keychains and ornaments. Cutting an outline and engraving fine text produce different results. Specify colour, dimensions, environment and quantity, including a sample if needed. Confirm feasibility and minimum quantity after assessment.

• Badges and award plates
• Door nameplates and apartment numbers
• Personalised keychains and souvenirs
• Decorative ornaments and interior accents

Which operations need separate confirmation?

Through-cutting, engraving, bending, machining and polishing are different operations, each with its own equipment and surface requirements. List all stages and agree availability, operator and inspection of the result for each in advance.

• Cutting: assess contour and thickness
• Engraving: assess surface and part positioning
• Bending, polishing or coating: separate agreement

How much does copper or brass cutting cost?

Assessment needs the contour or inscription, alloy, thickness, surface, quantity and final finish. Cutting and engraving involve different work, with cost determined by the particular task. Agree material sourcing, artwork and any sample separately; the quote should specify the complete scope, batch terms and timing.

Why do copper and brass change colour over time?

Exposed to air, copper and brass oxidise and gradually darken or develop a green-brown patina — a natural chemical process, not a defect. To keep a bright, new look, the piece needs a clear lacquer coat or periodic cleaning with a soft polish. If you prefer an aged, patinated look, simply leave the metal alone. Engraved lines often gain contrast as this happens, because patina collects faster in the recessed marks.