{"product_id":"pure-copper-wire-0-2mm-0-3mm-0-4mm-0-5mm-round-solid-bare-wire-multi-size-diy","title":"Pure Copper Wire 0.2mm 0.3mm 0.4mm 0.5mm Round Solid Bare Wire Multi-Size DIY","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003ch2 class=\"hdiy-overview\"\u003ePure Copper Wire 0.2–0.5mm — Round Solid Bare Wire for DIY Electronics, Jewelry \u0026amp; Craft Projects\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eWhen your project demands consistent conductivity and precise gauge control, generic wire often falls short — inconsistent diameter, brittle bends, or oxidation that interrupts signal flow. Hobbyists, electronics tinkerers, jewelers, and model builders who need reliable bare copper wire in fine gauges will find this spool a dependable workbench staple.\u003c\/p\u003e\n\u003cp\u003eThis listing offers round solid bare pure copper wire available in four diameters — 0.2mm (~0.008 in), 0.3mm (~0.012 in), 0.4mm (~0.016 in), and 0.5mm (~0.020 in) — wound on spools ranging from 10 m (~33 ft) to 100 m (~328 ft). The wire is uncoated and uninsulated, exposing the natural copper surface for direct soldering, forming, or wrapping without stripping.\u003c\/p\u003e\n\u003cp\u003eTypical applications include hand-winding transformer coils and inductors, forming jump rings and wire-wrapped jewelry components, building custom grounding leads for electronics repair, and crafting structural armatures for scale models or sculpture. The fine gauge range also suits bonsai wire training, fly-tying, and educational science experiments where a known-conductivity conductor is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚡\u003c\/span\u003e\n\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e This is uninsulated solid copper wire. It is not suitable as a direct replacement for insulated hookup wire in live mains circuits. Confirm gauge and length requirements before ordering — see variant options above.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Pure Copper Wire Spools\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eFour Precise Diameters\u003c\/strong\u003e\n\u003cp\u003eChoose from 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm to match your project's current-carrying or forming requirements without over-sizing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\n\u003cstrong\u003eSolid Round Conductor\u003c\/strong\u003e\n\u003cp\u003eSingle-strand solid construction maintains a consistent cross-section along the full spool length, giving predictable resistance per meter for coil-winding calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🪙\u003c\/span\u003e\n\u003cstrong\u003eBare Uncoated Surface\u003c\/strong\u003e\n\u003cp\u003eNo enamel or insulation to strip — the exposed copper surface solders cleanly and accepts patinas, oxidation treatments, or lacquer coatings as needed for jewelry and art applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n\u003cstrong\u003eMultiple Spool Lengths\u003c\/strong\u003e\n\u003cp\u003eAvailable in 10 m, 20 m, 30 m, 50 m, 80 m, and 100 m options so you can order exactly what a single project needs or stock a longer run for recurring use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eWorkable Temper\u003c\/strong\u003e\n\u003cp\u003eThe wire bends and holds shape without snapping at tight radii typical of jewelry jump rings or coil forms, while remaining firm enough to hold structural positions in model armatures.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧰\u003c\/span\u003e\n\u003cstrong\u003eBroad DIY Compatibility\u003c\/strong\u003e\n\u003cp\u003eSuited for electronics prototyping, transformer winding, wire-wrap jewelry, bonsai training, fly-tying, grounding straps, and educational science kits — one material, many uses.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Round Solid Bare Copper Wire\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePure copper (uncoated, uninsulated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWire Form\u003c\/th\u003e\n\u003ctd\u003eRound solid (single strand)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e0.2 mm \/ 0.3 mm \/ 0.4 mm \/ 0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e10 m \/ 20 m \/ 30 m \/ 50 m \/ 80 m \/ 100 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eBare (no enamel, no insulation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConductor Type\u003c\/th\u003e\n\u003ctd\u003eSolid (not stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemper\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Spool\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003ctd\u003eWound spool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich diameter should I choose for coil winding or transformer projects?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor low-current signal transformers and inductors, 0.2 mm or 0.3 mm wire allows more turns per layer and suits high-impedance windings. For power inductors carrying higher current, 0.4 mm or 0.5 mm reduces resistive losses. Calculate the required turns and target resistance first, then select the gauge that fits your bobbin dimensions.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this wire strong enough for jewelry jump rings and wire wrapping?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The 0.3 mm–0.5 mm gauges are commonly used for wire-wrapped pendants, jump rings, and coiled bead frames. The 0.2 mm gauge is better suited to fine detail work or accent wrapping rather than structural loops, as it can deform under repeated opening and closing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill bare copper wire corrode or tarnish over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBare copper oxidizes when exposed to air and moisture, developing a darkened patina over weeks to months. For electronics applications where oxidation could affect solder joints, work with freshly cut wire ends and flux before soldering. For decorative jewelry, a clear lacquer or wax coating applied after forming will slow tarnishing significantly.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this wire for grounding or electrical bonding in low-voltage DC circuits?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis wire is suitable for grounding straps, chassis bonding, and low-voltage DC connections in hobby electronics and automotive projects where the wire will not contact live mains voltage. Because it is uninsulated, ensure it is routed away from other conductors or secured with heat-shrink tubing where contact could cause a short.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose between the 10 m and 100 m spool lengths?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEstimate your project consumption first: a typical wire-wrapped pendant uses roughly 0.5–1 m; a small transformer coil may use 5–20 m depending on turns count. For one-off projects, a 10 m or 20 m spool avoids waste. If you work with copper wire regularly across multiple projects, the 50 m or 100 m spool offers a lower per-meter cost.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this wire compatible with bonsai training and plant shaping?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eCopper wire is a traditional choice for bonsai training because it holds branch positions firmly and blends with bark tones over time. The 1.0 mm–2.0 mm range is most common for bonsai, but the 0.5 mm gauge in this listing works well for very fine twigs and accent branches on small shohin-scale trees. Remove wire before it bites into bark, typically within one growing season.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the wire arrive pre-cut or on a continuous spool?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe wire arrives wound on a continuous spool in the length you select. No pre-cutting is done. You cut to your required length using flush-cut wire cutters or scissors, giving you full control over piece lengths for each application.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Diameter and Length above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which diameter should I choose for coil winding or transformer projects?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For low-current signal transformers and inductors, 0.2 mm or 0.3 mm wire allows more turns per layer and suits high-impedance windings. For power inductors carrying higher current, 0.4 mm or 0.5 mm reduces resistive losses. Calculate the required turns and target resistance first, then select the gauge that fits your bobbin dimensions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this wire strong enough for jewelry jump rings and wire wrapping?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 0.3 mm–0.5 mm gauges are commonly used for wire-wrapped pendants, jump rings, and coiled bead frames. The 0.2 mm gauge is better suited to fine detail work or accent wrapping rather than structural loops, as it can deform under repeated opening and closing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will bare copper wire corrode or tarnish over time?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Bare copper oxidizes when exposed to air and moisture, developing a darkened patina over weeks to months. For electronics applications, work with freshly cut wire ends and flux before soldering. For decorative jewelry, a clear lacquer or wax coating applied after forming will slow tarnishing significantly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this wire for grounding or electrical bonding in low-voltage DC circuits?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This wire is suitable for grounding straps, chassis bonding, and low-voltage DC connections in hobby electronics and automotive projects where the wire will not contact live mains voltage. Because it is uninsulated, ensure it is routed away from other conductors or secured with heat-shrink tubing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose between the 10 m and 100 m spool lengths?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Estimate your project consumption first: a typical wire-wrapped pendant uses roughly 0.5–1 m; a small transformer coil may use 5–20 m. For one-off projects, a 10 m or 20 m spool avoids waste. If you work with copper wire regularly, the 50 m or 100 m spool offers a lower per-meter cost.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this wire compatible with bonsai training and plant shaping?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Copper wire is a traditional choice for bonsai training because it holds branch positions firmly. The 0.5 mm gauge works well for very fine twigs and accent branches on small shohin-scale trees. Remove wire before it bites into bark, typically within one growing season.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the wire arrive pre-cut or on a continuous spool?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The wire arrives wound on a continuous spool in the length you select. No pre-cutting is done. You cut to your required length using flush-cut wire cutters or scissors, giving you full control over piece lengths for each application.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"0.2mm \/ 10","offer_id":52378295533842,"sku":"GLFBQYF2024BILINGQJD00804x10","price":55.01,"currency_code":"USD","in_stock":true},{"title":"0.2mm \/ 20","offer_id":52378295566610,"sku":"GLFBQYF2024BILINGQJD00804x20","price":105.88,"currency_code":"USD","in_stock":true},{"title":"0.2mm \/ 30","offer_id":52378295599378,"sku":"GLFBQYF2024BILINGQJD00804x30","price":157.76,"currency_code":"USD","in_stock":true},{"title":"0.2mm \/ 50","offer_id":52378295632146,"sku":"GLFBQYF2024BILINGQJD00804x50","price":261.53,"currency_code":"USD","in_stock":true},{"title":"0.2mm \/ 80","offer_id":52378295664914,"sku":"GLFBQYF2024BILINGQJD00804x80","price":417.18,"currency_code":"USD","in_stock":true},{"title":"0.2mm \/ 100","offer_id":52378295697682,"sku":"GLFBQYF2024BILINGQJD00804x100","price":520.95,"currency_code":"USD","in_stock":true},{"title":"0.3mm \/ 10","offer_id":52378295730450,"sku":"GLFBQYF2024BILINGQJD00805x10","price":58.04,"currency_code":"USD","in_stock":true},{"title":"0.3mm \/ 20","offer_id":52378295763218,"sku":"GLFBQYF2024BILINGQJD00805x20","price":114.0,"currency_code":"USD","in_stock":true},{"title":"0.3mm \/ 30","offer_id":52378295795986,"sku":"GLFBQYF2024BILINGQJD00805x30","price":169.93,"currency_code":"USD","in_stock":true},{"title":"0.3mm \/ 50","offer_id":52378295828754,"sku":"GLFBQYF2024BILINGQJD00805x50","price":281.82,"currency_code":"USD","in_stock":true},{"title":"0.3mm \/ 80","offer_id":52378295861522,"sku":"GLFBQYF2024BILINGQJD00805x80","price":457.76,"currency_code":"USD","in_stock":true},{"title":"0.3mm \/ 100","offer_id":52378295894290,"sku":"GLFBQYF2024BILINGQJD00805x100","price":571.64,"currency_code":"USD","in_stock":true},{"title":"0.4mm \/ 10","offer_id":52378295927058,"sku":"GLFBQYF2024BILINGQJD00806x10","price":69.16,"currency_code":"USD","in_stock":true},{"title":"0.4mm \/ 20","offer_id":52378295959826,"sku":"GLFBQYF2024BILINGQJD00806x20","price":136.19,"currency_code":"USD","in_stock":true},{"title":"0.4mm \/ 30","offer_id":52378295992594,"sku":"GLFBQYF2024BILINGQJD00806x30","price":203.24,"currency_code":"USD","in_stock":true},{"title":"0.4mm \/ 50","offer_id":52378296025362,"sku":"GLFBQYF2024BILINGQJD00806x50","price":346.32,"currency_code":"USD","in_stock":true},{"title":"0.4mm \/ 80","offer_id":52378296058130,"sku":"GLFBQYF2024BILINGQJD00806x80","price":552.76,"currency_code":"USD","in_stock":true},{"title":"0.4mm \/ 100","offer_id":52378296090898,"sku":"GLFBQYF2024BILINGQJD00806x100","price":690.39,"currency_code":"USD","in_stock":true},{"title":"0.5mm \/ 10","offer_id":52378296123666,"sku":"GLFBQYF2024BILINGQJD00807x10","price":75.17,"currency_code":"USD","in_stock":true},{"title":"0.5mm \/ 20","offer_id":52378296156434,"sku":"GLFBQYF2024BILINGQJD00807x20","price":148.23,"currency_code":"USD","in_stock":true},{"title":"0.5mm \/ 30","offer_id":52378296189202,"sku":"GLFBQYF2024BILINGQJD00807x30","price":229.73,"currency_code":"USD","in_stock":true},{"title":"0.5mm \/ 50","offer_id":52378296221970,"sku":"GLFBQYF2024BILINGQJD00807x50","price":381.37,"currency_code":"USD","in_stock":true},{"title":"0.5mm \/ 80","offer_id":52378296254738,"sku":"GLFBQYF2024BILINGQJD00807x80","price":608.83,"currency_code":"USD","in_stock":true},{"title":"0.5mm \/ 100","offer_id":52378296287506,"sku":"GLFBQYF2024BILINGQJD00807x100","price":760.47,"currency_code":"USD","in_stock":true},{"title":"0.6mm \/ 10","offer_id":52378296320274,"sku":"GLFBQYF2024BILINGQJD00808x10","price":90.37,"currency_code":"USD","in_stock":true},{"title":"0.6mm \/ 20","offer_id":52378296353042,"sku":"GLFBQYF2024BILINGQJD00808x20","price":186.76,"currency_code":"USD","in_stock":true},{"title":"0.6mm \/ 30","offer_id":52378296385810,"sku":"GLFBQYF2024BILINGQJD00808x30","price":279.0,"currency_code":"USD","in_stock":true},{"title":"0.6mm \/ 50","offer_id":52378296418578,"sku":"GLFBQYF2024BILINGQJD00808x50","price":463.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_8354d449-c440-4c68-b754-c2b7f6c4d9d7.jpg?v=1781767049","url":"https:\/\/homediyer.com\/de\/products\/pure-copper-wire-0-2mm-0-3mm-0-4mm-0-5mm-round-solid-bare-wire-multi-size-diy","provider":"HomeDIYer","version":"1.0","type":"link"}