OTEC Machines

Engineered in Germany, OTEC machines deliver flawless, mirror-like finishes with unmatched speed and consistency. They automate tedious bench labour and protect delicate jewellery geometries across every batch.

OTEC Machines

OTEC EF-One

The EF-One combines precision, sustainability, and automation in a compact, affordable system – ideal for small and medium-sized jewelry workshops. An unbeatable price-performance ratio for the highest quality standards.

The EF-One complements the proven Eco-Maxi, optimizing precious metal processing through automation and minimal manual rework. Perfect for intricate geometries and hard-to-reach areas.

Sample Testing:
Hygrade Casting can provide clients with product sample testing including inspection of this exact machine model at our facility, please contact us to arrange an appointment.
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Benefits of OTEC EF-Smart

  • Plug-and-Play-System
    Quick and easy commissioning saves time and reduces training efforts.

  • Eight pre-installed programs
    These can be used without special prior know ledge, making the EF-One ideal for beginners and smaller jewelry workshops.

  • Intelligent Media Container Recognition
    The container stores information about the process media and operating hours. It enables the corresponding functions accordingly. Through automated assignment, only liquid electrolytes are permitted.

  • Guide-through-Menu
    A user-friendly navigation system guides the operator through the functions, minimizing Errors and increasing production efficiency.

Why Choose the OTEC EF-One

Innovative & Sustainable

  • Up to 100% gold recovery – no material loss

  • No need for polishing or acid baths – safe, eco-friendly processing

  • Cyanide-free process – non-toxic jewelry finishing

Compact & Versatile

  • Suitable for gold, silver, brass, Stainless steel, titanium & white gold-palladium

  • Processes up to six rings simultaneously

  • Special holders available for individual workpieces

Fast & Efficient

  • Only 30 minutes processing time per cycle

  • 90% less manual polishing work

  • Minimal maintenance due to fast electrolyte replacement

The Smart Choice for Jewellers & Manufacturers

The EF-One combines precision, sustainability, and automation in a compact, affordable system – ideal for small and medium-sized jewelry workshops. An unbeatable price-performance ratio for the highest quality standards.

Experience the outstanding OTEC high-gloss results!

Based on your requirements, we develop customized solutions in our Finishing Center.

Enquire about the OTEC EF-One

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