GF Machining Solutions Sinker EDM (Ram EDM)

GF Machining Solutions Form 600

$200,000 – $360,000 Updated 2026-03-17

Key Specifications

X Travel

600 mm (23.6 in)

Y Travel

400 mm (15.7 in)

Z Travel

400 mm (15.7 in)

Accuracy

2 um

Repeatability

1 um

work tank dimensions

1,050 x 750 x 550 mm (41.3 x 29.5 x 21.7 in)

Overview

The GF Machining Solutions Form 600 is a mid-size CNC sinker EDM from GF Machining Solutions (formerly AgieCharmilles), one of the world's most recognized names in EDM technology. With 600 x 400 x 400 mm of X/Y/Z travel and a work tank capacity accepting up to 3,000 kg workpieces, the Form 600 occupies the productive middle ground of the sinker EDM market — large enough for full mold cavity blocks, compact enough to fit standard toolroom floor layouts.

GF Machining Solutions' Intelligent Power Generator (IPG) is the performance core of the Form 600. The IPG monitors and controls each individual discharge at sub-microsecond resolution, delivering stable spark conditions even in complex cavities with difficult flushing access. The generator's IsoPulse technology maintains constant pulse energy regardless of gap contamination, preventing the surface roughness deterioration that plagues simpler generators in deep-cavity or poor-flushing conditions. Metal removal rates of up to 550 mm3/min on graphite are achievable, and the generator drives to mirror-quality VDI 2 (Ra 0.1 um) finishes on the same machine without electrode or setup changes.

The Form 600's machine base uses Granitan S103 mineral casting — GF Machining Solutions' proprietary synthetic granite material that provides ten times the vibration damping of cast iron. This foundation contributes directly to surface quality in fine finishing and to geometric accuracy on complex orbiting strategies that require precise sub-micron Z-axis movement. The design also includes integral thermal compensation, countering the effect of ambient temperature changes on axis positioning.

Control is handled by GF Machining Solutions' AC Form HMI, a modern touchscreen control running on the company's own platform with direct integration to GF's System 3R tooling management ecosystem. The HMI includes a full library of pre-programmed EDM cycles, material-specific process databases, and connectivity to GF's rConnect remote monitoring platform. Combined with the System 3R WorkMaster robot interface, the Form 600 integrates into fully automated cell configurations for high-volume mold and tooling production.

Full Specifications

Parameter	Value
Work Tank Dimensions	1,050 x 750 x 550 mm (41.3 x 29.5 x 21.7 in)
X-Axis Travel	600 mm (23.6 in)
Y-Axis Travel	400 mm (15.7 in)
Z-Axis Travel	400 mm (15.7 in)
Max Workpiece Weight	3,000 kg (6,614 lb)
Dielectric System	Petroleum-based with integrated temperature-controlled filtration
Surface Finish	VDI 2 (Ra 0.1 um) achievable
Control System	GF Machining Solutions AC Form HMI (touchscreen)
Generator Power	GF Intelligent Power Generator (IPG), up to 80 A peak current
Machine Weight	7,200 kg (15,873 lb)
Positioning Accuracy	2 um
Repeatability	1 um
Metal Removal Rate	550 mm3/min (graphite roughing)
Electrode Weight Max	200 kg (441 lb)

Specifications sourced from gfms.com — verified 2026-03-28

Strengths & Limitations

Strengths

Intelligent Power Generator with IsoPulse technology maintains stable spark conditions in deep cavities and poor-flushing situations where simpler generators degrade surface quality
Granitan mineral casting base provides 10x more vibration damping than cast iron, directly improving surface finish in fine and mirror-quality EDM work
System 3R tooling ecosystem integration enables seamless pallet automation and robot cell connectivity for lights-out mold production
rConnect remote monitoring platform allows GF service technicians to diagnose and often resolve issues without on-site visits
3,000 kg workpiece capacity covers the vast majority of injection mold cavity blocks and automotive die inserts
GF Machining Solutions' global service network is one of the strongest in the EDM industry with local support in all major manufacturing regions

Limitations

Form 600 pricing is at the premium end of the mid-size sinker EDM segment — buyers comparing to Chmer or ONA equivalents will pay significantly more for the GF brand
Granitan base makes the machine extremely heavy for its travel class — installation and relocation require heavy equipment and reinforced foundations
AC Form HMI, while capable, uses GF-proprietary programming methods that require retraining for operators experienced on Sodick or Makino controls
System 3R tooling integration, while powerful, adds significant accessory cost to achieve full automation capability

Best For

Precision mold shops prioritizing surface finish quality and process consistency above all other factors Automated tooling cells running System 3R pallet systems with robot-loaded electrode and workpiece management Medical device toolmakers requiring mirror-quality finishes on cavity surfaces with tight dimensional tolerances Tier 1 automotive suppliers where GF service response time and process documentation standards are contractual requirements

Frequently Asked Questions

01 What does a GF Machining Solutions Form 600 cost?

New Form 600 machines typically range from $200,000 to $360,000 depending on generator configuration, System 3R tooling interface, automation options, and dielectric system. Used Form 600 machines in good condition are typically priced between $80,000 and $150,000.

02 What is IsoPulse technology and why does it matter?

IsoPulse is GF's generator technology that maintains constant pulse energy per discharge regardless of gap contamination or flushing conditions. This prevents the surface roughness spikes and arcing that occur in conventional generators when debris accumulates in deep cavities. The result is more consistent surface quality in difficult geometries.

03 What is Granitan and how does it benefit EDM?

Granitan S103 is GF Machining Solutions' proprietary mineral casting material, a composite of quartz aggregate and synthetic resin. It provides approximately 10 times the vibration damping of cast iron, which reduces micro-vibration at the electrode-workpiece gap. Better damping directly improves surface finish on fine and mirror-quality EDM work.

04 Does the Form 600 integrate with automation systems?

Yes. The Form 600 includes native integration with GF's System 3R tooling management system and WorkMaster robot cells. This makes it a natural choice for automated sinker EDM cells where robots load palletized electrodes and workpieces. The rConnect platform also enables remote job scheduling and monitoring.

05 How does the Form 600 compare to the Makino EDNC65?

Both are premium mid-size sinker EDMs with comparable travel and workpiece capacity. GF's IsoPulse generator and Granitan base are particularly strong in surface finish consistency; Makino's HyperI generator leads on maximum metal removal rate. Both offer comparable axis accuracy and unattended operation capability. Service coverage is comparable globally.