The chain is fine...but I ordered the wrong size. Nine links of the chain I ordered equals six of the size I wanted. My error...
How can I straighten out the springs? I can't use them coil uo as is.
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When your project demands a reliable, conductive, and workable metal blank, sourcing the right copper disc can be frustrating — wrong thickness, inconsistent diameter, or impure alloy. Whether you are a jewellery maker, electronics hobbyist, or workshop fabricator, these solid pure copper disc blanks give you a clean, ready-to-use starting point with no secondary processing required.
Each disc is cut from solid copper (Cu), with thickness options ranging from 1.5 mm to 6 mm (approximately 0.06 in to 0.24 in) and diameters spanning 10 mm to 300 mm (approximately 0.39 in to 11.81 in). The flat, smooth surface is consistent across the face, making these blanks suitable for stamping, etching, forming, and electrical contact applications.
Typical use cases include copper disc blanks for jewellery stamping, round copper plate for electrical bus bar fabrication, and solid copper circle blanks for DIY metalworking and craft projects. The wide size matrix lets makers and engineers select the exact Thick × Diameter combination without cutting waste.
Made from solid copper (Cu) with no hollow core, delivering consistent conductivity and workability throughout the full disc cross-section.
Thickness from 1.5 mm to 6 mm and diameter from 10 mm to 300 mm — select the exact Thick × Diameter combination your project requires.
Each disc features flat, smooth faces ready for stamping, etching, forming, or direct use as an electrical contact without additional surface prep.
Copper's inherent conductivity makes these discs well-suited for bus bars, grounding pads, electrical contacts, and heat-dissipation applications.
The natural copper surface accepts patinas, liver of sulfur, and chemical finishes, making these blanks a favourite for jewellery stamping and decorative metalwork.
Available in 1 PCS, 2 PCS, or 4 PCS packs depending on the size selected — order exactly what you need for prototyping or small-batch production.
| Material | Solid Copper (Cu) |
|---|---|
| Thickness Range | 1.5 mm – 6 mm (0.06 in – 0.24 in) |
| Diameter Range | 10 mm – 300 mm (0.39 in – 11.81 in) |
| Shape | Round / Circular Disc |
| Surface Finish | Flat, smooth-cut faces |
| Alloy Type | Copper |
| Pack Quantity | See variant options |
| Weight (per piece) | See variant options |
| Hardness | See variant options |
Select the Thick × Diameter combination from the variant dropdown above. Thickness (1.5 mm–6 mm) determines rigidity and weight, while diameter (10 mm–300 mm) sets the footprint. For jewellery stamping, 1.5 mm–2 mm thick discs in 20 mm–50 mm diameters are common. For electrical contacts or bus bars, 3 mm–6 mm thick discs are typically preferred.
These are solid copper discs. The listing specifies copper (Cu) as the metal/alloy type. If you require a specific alloy grade (e.g., C110 ETP copper), please contact us to confirm before ordering.
Copper naturally oxidises over time, developing a patina that ranges from brown to green (verdigris). This does not affect structural integrity. For applications requiring a bright finish, the surface can be polished or sealed with a clear lacquer. For decorative metalwork, the natural patina is often a desired aesthetic outcome.
Yes. Copper's high electrical and thermal conductivity makes these discs suitable for grounding pads, electrical contacts, bus bar segments, and heat-dissipation plates. Ensure the disc dimensions match your design clearances and current-carrying requirements.
Yes. Copper is a relatively soft, ductile metal that machines, drills, files, and stamps readily with standard workshop tools. Use sharp tooling and moderate feed rates to achieve clean edges. Thicker discs (4 mm–6 mm) may require more force for stamping or forming operations.
Pack quantities vary by size: smaller discs (e.g., 10 mm diameter) are available in 4 PCS or 2 PCS packs, while larger diameters are typically sold as 1 PCS. Select your Thick × Diameter combination first — the available quantity options will display automatically. For bulk orders beyond the listed quantities, please contact us.
Absolutely. Copper disc blanks are a staple in jewellery making, metal stamping, and craft projects. The flat, smooth surface accepts letter stamps, design punches, and chemical patinas. Thinner discs (1.5 mm–2 mm) are easiest to work with hand tools, while thicker discs suit more structural jewellery or decorative hardware.