JEWELRY AND WATCHMAKING INDUSTRY

Surfaces finished as if by hand

In the world of jewelry and watches, perfection is paramount – impeccable surfaces define true excellence. OTEC is synonymous with precision and innovation, supplying leading manufacturers worldwide with high-end finishing solutions “Made in Germany.” By harmonizing advanced process technology with state-of-the-art machine engineering, our systems achieve unmatched hand-polished quality on gold, silver, platinum, stainless steel, brass, and ceramics – reliably, efficiently, and with absolute consistency.

Suitable for the following materials:

Gold
Silver
Platinum
Stainless steel
Brass
Ceramics

Areas of application:

Rings
Jewelry pendants
Bracelets & bangles
Necklaces & choker jewelry
Watch cases & bands
Functional parts of mechanical watches
Gemstones

Centrifugal Disc Finishing

Maximum efficiency for flawless surfaces

OTEC’s centrifugal disc finishing process ensures exceptionally efficient and uniform surface refinement. Inside the rotating processing drum, the relative movement between the workpiece and the grinding or polishing media creates a perfect finish—up to 20 times more effective than conventional vibratory systems. Available in various sizes, this technology enables highly economical processing of diverse parts.

Applications:

Functional components of mechanical watches
Jewelry pieces under 10 g 
Polishing of gemstones
Clasps and belt buckles
Watch bands and cases
Rings

Electro Finishing Process

Ultimate precision for delicate jewelry

OTEC’s Electrofinish process provides gentle yet thorough smoothing and polishing, reaching even the finest details. By using targeted electrochemical removal, workpieces achieve a pure metallic surface with long-lasting brilliance—perfect as a complementary process to mass finishing for absolute high-end results. This method is especially beneficial for delicate or intricate jewelry designs.