Electropolishing for professional jewellery production

Electropolishing is an advanced surface finishing process that is increasingly used in professional jewellery workshops. The method enables smoothing and high-gloss polishing of metal surfaces through a controlled electrolytic process, where microscopic surface irregularities are removed without mechanical impact.

At Aktiv Guld, we offer a carefully selected range of electropolishing machines from OTEC – one of the world’s leading manufacturers of surface finishing solutions for the jewellery industry. The machines are designed for professionals who demand high quality, process reliability and efficiency.

What is electropolishing?

Electropolishing is an electrolytic process in which the workpiece is immersed in a specially developed electrolyte and exposed to electrical current. The result is a controlled smoothing of the surface, producing a smooth, bright and uniform finish – without altering the shape or fine details.

For goldsmiths and jewellery designers, this means:

• Reduced manual polishing work
• Consistent and reproducible results
• Gentle processing of delicate items
• The ability to polish internal contours and hard-to-reach areas

Electropolishing is particularly well suited for gold alloys, white gold, palladium white gold, silver and brass – for both cast and 3D-printed jewellery.

Advanced electropolishing machines for jewellery from OTEC

Our range includes OTEC EF-Nova and EF-Smart S+ – two electropolishing machines representing the latest advancements in the technology.

EF-Nova is a powerful and user-friendly machine that efficiently polishes red, yellow and white gold as well as silver and brass. With short processing times of typically 10–30 minutes and the capacity to process multiple rings at once, it is ideal for daily production. Polishing and fine polishing are combined in a single process, while predefined programs ensure consistent quality.

EF-Smart S+ is designed for professionals working with complex jewellery, fine details and stone-set pieces. The electrolytic process is particularly gentle, ensuring high-gloss polishing without rounding prongs or risking damage to stones. The machine supports multi-step programs and provides full control over voltage, rotation and processing time, making it suitable for both single-piece production and small series.

Safe electropolishing and a better working environment

Modern electropolishing is not only about surface finish, but also about the working environment. OTEC’s electropolishing machines use electrolyte solutions free from acid and cyanide, contributing to a safer and more comfortable workshop environment.

When does electropolishing add the most value in jewellery production?

Electropolishing is particularly relevant if you:

• Work with complex jewellery and fine details
• Require consistent results in repeated production
• Want to reduce time spent on manual finishing
• Produce both cast and 3D-printed pieces
• Focus on ergonomics and a better working environment

Many professionals use electropolishing as a fixed part of their production workflow – either as a final finish or as preparation before manual polishing.

Get professional advice on electropolishing at Aktiv Guld

Choosing the right electropolishing machine depends on your materials, types of workpieces and production volume. At Aktiv Guld, we have many years of experience advising professional goldsmiths and jewellery designers, and we are happy to help you find the solution that best suits your workshop.

You are always welcome to contact us for professional guidance – or visit our showroom for a demonstration and personal advice.