technology leader in the field of Disc Finishing, OTEC develops and produces innovative machine concepts for perfect surface finishing.

The grinding and polishing systems, which are exclusively "Made in Germany", offer an optimal solution in terms of precision and cost-effectiveness. The company motto "Perfect surfaces worldwide" has shaped all inventions and patents as well as the actions of the entire team for over 25 years.

Electro Finishing machine  EF-NOVA.

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

EF-NOVA Highlights

  • 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-Nova 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.

Electro Finishing machine  EF-Smart S & EF-Smart S+.

The OTEC EF-Smart S & Smart S+ combine top quality with high cost-effectiveness. Perfect for polishing intricate jewellery.

EF-SMART S Highlights

  • Processing of gold, silver, brass and copper is possible

  • Reproducible processes due to easy multistep process programming

  • Easy metal recovery via deposition on cathodes

  • Ergonomically designed operating controls

  • Fast and easy container changes

  • 24 simultaneously processable workpieces

  • Minimising the need for manual polishing

  • Excellent polish without rounding

  • Small footprint

  • Low capital investment

  • Maintenance friendly

EF SMART S+ Highlights

  • All of the above features with the EF-Smart S

  • Processing of white gold palladium with the EF-Smart S+

Disc-type Finishing system – eco-maxi .

The modular concept of the Eco-Maxi is ideal for smaller series production. Due to the leading technology, the machines are characterised by high economic efficiency, which saves you up to 60% of your conventional production costs. Depending on the desired processing goal, the Eco-Maxi is available as a full kit with three containers "wet", "dry" and "magnetic" or customers can request any of the three process containers individually with the option to purchase the other containers at a later stage. The main purpose of the Eco-Maxi is deburring, smoothing and polishing.

Clean and bright workpiece surfaces

Complete removal of sandpaper marks and casting skin for optimal results.

Refining the surface to hand-polished quality

Shine even in hard-to-reach, delicate areas as well as complete removal of oxide discoloration and investment material residues.

Flexible use

This machine type is the first to realize the use of three different machining processes with just one machine.