Fine Bare Pure Copper 110 Wire — Thin Solid Copper Wire

Fine bare pure copper 110 wire — also called thin solid copper wire, small-gauge bare copper wire, soft copper wire, or fine copper wire — is single-strand, uncoated, 99.9% pure copper 110 wire in the small-diameter range. It is soft, flexible, and highly conductive, so it winds, wraps, twists, and solders easily. US buyers use fine bare copper wire for coil and solenoid winding, small transformer and inductor work, electronics prototyping and wire wrapping, jumper and ground connections, jewelry and wire crafts, beading, sculptures, small-batch harnesses, and hobby and experimental projects. It is supplied on 100-meter spools in the United States.

This fine wire is selected by its diameter in millimeters, with the approximate American Wire Gauge (AWG) shown in brackets for reference. Because it is bare, it carries no enamel or insulation; it is for exposed conductive work, connections, and crafts rather than insulated magnet-wire coils.

What Is Fine Bare Copper Wire?

Pure copper 110 is commercial-grade 99.9% pure copper valued for high electrical and thermal conductivity, natural corrosion resistance, and excellent ductility. Drawn into fine single-strand wire, it becomes soft and easy to handle, while staying solid (one strand, not stranded) and bare (no coating). US buyers search this range as “fine copper wire,” “thin solid copper wire,” “small gauge copper wire,” “bare copper wire,” “soft copper wire,” “copper wire for winding,” “copper wire for crafts,” and by millimeter or AWG diameter. Thicker conductor sizes are supplied as heavy bare copper wire, and a single-crystal audio-grade wire is supplied separately as 6N OCC wire.

Diameter Sizes and Approximate AWG

Fine wire is ordered by millimeter diameter, with the closest AWG shown as a guide. Each diameter variant is a single solid strand, bare and uncoated, and is supplied on a standard 100-meter spool.

AWG numbers are approximate because American Wire Gauge sizes do not convert to round millimeter values. Sizes above the fine range are supplied as heavy bare copper wire, and the full range is in the copper wire collection.

Key Properties of Fine Bare Copper Wire

Why Choose Fine Bare Copper Wire

• Winds tightly — small solid diameters pack closely into coils, solenoids, inductors, and small transformers.
• Solders instantly — the bare surface takes solder cleanly for jumper links, contacts, and repair work without stripping insulation.
• Easy to wrap and form — soft copper follows forms, armatures, and designs for jewelry, sculpture, and wire crafts.
• Convenient 100-meter spools — a fixed spool length keeps small projects, prototyping, and short production runs well supplied.
• Millimeter and AWG sizing — order by the exact millimeter diameter, with the approximate AWG shown for familiar US selection.
• High conductivity — 99.9% pure copper 110 keeps fine conductors efficient in signal and low-current power paths.

How to Order Fine Wire

Common Applications

Industries That Use Fine Bare Copper Wire

• Electronics & electrical — prototyping, small inductors, relays, wire-wrapped circuits, and internal links.
• Coil & motor winding — small transformers, solenoids, actuators, and experimental coils where bare conductive wire is used.
• Education & research — electrical demonstrations, physics experiments, and student and laboratory builds.
• Jewelry & crafts — wire wrapping, crochet, beading, sculpture, and decorative metalwork.
• Hobby & maker — model making, small harnesses, and custom electronics and audio projects.
• Repair & maintenance — short jumper links, tiny grounding straps, and fine electrical connections.

Bare Wire vs Enameled Magnet Wire

• Bare copper wire (this product) has no coating; every surface conducts, so it is used for exposed connections, grounding, wire wrapping, and crafts.
• Enameled magnet wire has a thin insulating film so adjacent turns can touch without shorting, and is used for wound motor and transformer coils.
• For a bare-wire coil, keep turns separated or use a layer of insulation where turns would otherwise contact.

Spool Lengths and Custom Requirements

Fine bare pure copper 110 wire is supplied on 100-meter spools as one continuous single-strand length per spool. Diameters outside the standard fine range, different spool lengths, or additional processing are handled as custom orders, with handling time extended according to the difficulty and complexity of the work. Larger-diameter solid conductor is supplied as heavy bare copper wire on 10-meter units.

Shipping & Delivery

Fine Bare Copper Wire FAQ