The AgieCharmilles Form E 600 is a high-precision CNC sinker EDM machine widely used in toolmaking, mold production, aerospace, and precision engineering. Buying it second-hand can be an excellent investment, but only if you carefully inspect its mechanical, electrical, and control systems.

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Key Points to Check

1. Dielectric System & Tank Condition
   • Inspect the dielectric fluid tank for leaks, corrosion, or contamination.
   • Verify that the dielectric circulation system, filters, and pumps are in proper working condition.
   • Clean and stable dielectric circulation is essential for consistent spark erosion and surface finish.
2. Generator & Power Supply
   • The EDM generator defines cutting speed and surface quality.
   • Check that all power modules, transistors, and discharge circuits operate without alarms or instability.
   • Ask if the machine still meets its original specifications for surface roughness and material removal rate.
3. Axis Movement & Precision
   • Inspect X, Y, Z axes for smooth motion, no backlash, and precise positioning.
   • Verify ball screws, linear guides, and servo motors for wear, vibration, or noise.
   • Request a positioning accuracy report or perform test machining to confirm tolerances.
4. Tool Changer & Electrode Holders
   • Ensure that the electrode holder and chucking system are clean and undamaged.
   • If the machine has an automatic tool changer, check alignment, clamping force, and repeatability.
5. Cooling & Thermal Stability
   • Proper cooling systems are vital to maintain electrode and workpiece temperature stability.
   • Inspect coolant pumps, piping, and filters for blockages or leakage.
6. CNC Control (GF Machining Solutions / AgieCharmilles Control)
   • Confirm the version of the control software and its compatibility with CAM/EDM programming systems.
   • Test responsiveness, graphics display, and memory.
   • Check that communication ports (USB, Ethernet, RS-232) work if you plan to transfer large NC programs.
7. Safety Features
   • Verify door interlocks, emergency stop functions, and overcurrent protection.
   • Ensure the dielectric system has grounding and safety monitoring intact.
8. Service & Spare Parts Availability
   • AgieCharmilles machines have strong aftermarket support, but check regional service availability.
   • Spare parts such as filters, pumps, boards, and power modules should be confirmably available.
9. Usage History & Documentation
   • Request service logs, maintenance history, and any repair reports.
   • Machines used in clean mold shops are usually in better condition than those used in high-volume, heavy-duty operations.
10. Trial Machining
    • Always ask for a real cutting test with different electrodes.
    • Inspect the resulting surface finish, corner sharpness, and dimensional accuracy.

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Conclusion

A second-hand AgieCharmilles Form E 600 CNC Sinker EDM can deliver world-class precision if it has been properly maintained, calibrated, and supported with available spares. By carefully checking the generator, dielectric system, axes precision, control system, and electrode handling, you can avoid unexpected repair costs and secure a reliable, productive investment.