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 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.
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.
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.