The EPAG Flex is an innovative new electropolishing machine for yellow, red and white gold. This electropolishing unit enables filigree jewelry rings to be ground and polished in the shortest possible time. Intricate details remain intact and internal contours receive an excellent finish. Manual polishing is reduced to a minimum and the quality of your surfaces is greatly enhanced. Thanks to its modular design, the machine can be subsequently expanded to up to three individually controllable process tanks. The software includes a database in which workpiece specific process parameters can easily be stored and managed.


  • Perfect for gold
  • Reduces manual polishing to a minimum
  • Gold carried over into the bath during the electropolishing process can easily be recovered by means of simple filtration
  • Can easily and affordably be expanded to up to three process tanks
  • Completely cyanide-free process
  • Workpiece parameter management system



  • Machine cladding made from easy-to-clean plastic
  • Control unit in high-quality painted stainless stee
  • USB port for easy software updates and upgrades
  • Capacity for up to 40 workpieces per process tank
  • Process tanks in PP (polypropylene plastic), working volume approx. 18 liters each
  • Two rinse tanks with a working capacity of approx. 8 liters each
  • Filter unit for collecting particles
  • Mains connection 230 V 50/60 Hz 2.6 VA
  • Bath liquid (electrolyte): GL 20 for gold

Various holder systems

Mounting table

Mobile air extraction unit
A variety of exchangeable cathode systems
Process tank module (expands the machine by up to three process containers)

Let us prove how good our technology is. We will be happy to put the performance of OTEC technology and EPAG to the test. We will give you detailed advice and develop a finishing concept tailored to your needs and formulate the best grinding and polishing media for your application. In addition, we offer to finish a sample workpiece for you with no obligation and to provide you wth a process log documentng all key process parameters.