EF-Flex Electro Finishing Machine: EF-Flex is used for the processing of delicate & intricate jewellery pieces with complex geometries that requires gentle smoothing & polishing. With perfect process reliability. Short processing time for cost-effective & high-volume processing, minimising manual work. Application areas: Bracelets, bangles, pendants, rings & necklaces in yellow, red & white gold, silver, brass & stainless steel. Processing in hard-to-reach areas & inner contour. Maintaining intricate geometries with gentle smoothing & polishing. Excellent polishing on gemstone settings without rounding. Sparkling diamonds due to the high polished setting. No damage to diamonds, gemstones & zirconia. Reducing pre-polishing & filing time by up to 90%. Features: Cyanide-free abrasive with no aggressive acids – no suction required. Reproducible & fast results in process time of just 10-20 minutes. Easy gold recovery through filtration of electrolyte & separation at the cathodes. Modular Electro Finishing Machine for up to 40 workpieces per process container. Up to 3 process containers to be added due to flexible design. Intuitive touch panel control & “recipe” database with workpiece specific standard programs. USB port for software updates. Remote control, remote maintenance & OPC UA interface options. EF-Compact Electro Finishing Machine The new EF-Compact table-top machine gently smooths & polishes delicate jewellery pieces with complex geometries. Combining top quality with maximum effectiveness. Application areas: Chokers, bracelets, bangles, pendants, & rings in yellow, red & white gold. Processing hard-to-reach & inner contours. Gentle processing of delicate jewellery pieces without bending. Excellent polishing on gemstone settings without rounding. Sparkling diamonds due to the high polished setting. No damage to diamonds, gemstones & zirconia. Reducing pre-polishing by up to 90%. Features: Cyanide-free abrasive with no aggressive acids – no suction required. Reproducible & fast results in process time of just 10-20 minutes. Easy gold recovery through filtration of electrolyte & separation at the cathodes. Intuitive touch panel control & “recipe” database with workpiece specific standard programs. Remote control & remote maintenance options. Recommended installation height is 450mm. EF-Smart S Electro Finishing Machine Gently smooths & polishes delicate jewellery pieces & workpieces with complex geometries. Prefect process reliability & processing even in the smallest corners. With short processing time & high-quality results. The EF-Smart S is cost effective & minimises manual work steps. Compact Electro Finishing Machine with ergonomically designed operating controls. Processes free from acid & cyanide. Processes in hard-to-reach areas & inner contours. Easy programming for reproducible processes. No pre-polishing needed. Easy programming of multi-step processes using the direction of rotation, voltage, processing time & speed parameters. Process container cover with 4 mounts, each for 6 workpieces. Easy precious metal recovery via deposition on cathodes. Fast & easy container changes, enabling machine retooling from gold to silver processing in minutes. No damage to gemstones & excellent polish on setting without rounding. Suitable for cast & 3D-printed jewellery. EF-Nova Electro Finishing Machine The EF-Nova optimises precious metal processing through automation & minimising manual work. The EF-Nova is perfect for intricate geometries & hard-to-reach areas. Plug-and-Play system. Eight pre-installed programmes & intelligent media container recognition (with RFID Chip). The EF-Nova combines automation, sustainability & precision into a compact & affordable system. Ideal for small – medium jewellery workshops. Application areas: Rings, earrings, pendants, etc in gold, white gold-palladium, silver, brass, stainless steel & titanium. Processing in hard-to-reach areas Up to 100% gold recovery – no material loss No need for polishing or acid baths – safe & eco-friendly. Cyanide free 30 min processing cycle Process up to six rings simultaneously. Special holder available for individual workpieces Otec Electro Finishing Range March 17th, 2026ThinnPro
