ONA RP6 Fast Wire EDM
Key Specifications
X/Y/Z Travel
Max Workpiece Weight
Wire Diameter Range
Max Cutting Speed
Surface Finish Ra
Taper Angle
Overview
The ONA RP6 is a fast wire CNC wire EDM machine designed to deliver high material removal rates for production environments where cutting speed is the primary performance metric. Unlike conventional slow wire EDM machines that use single-pass brass wire, the RP6 uses a reciprocating high-speed wire system that recycles the wire at cutting speeds up to 12 m/s, dramatically reducing consumable costs while enabling sustained high-productivity cutting.
Fast wire EDM technology, sometimes called high-speed wire EDM or WEDM-HS, is prevalent in Asian manufacturing environments and is increasingly adopted by European and American shops seeking to reduce per-part wire costs on high-volume production work. The ONA RP6 brings European machine build quality and ONA’s generator expertise to this technology class, resulting in better surface finish and accuracy than conventional Asian fast wire machines while retaining the consumable cost advantage.
The RP6 is optimized for carbide die cutting, copper alloy components, aluminum parts, and general production work where part volumes are high and per-piece wire costs on a slow wire machine would be prohibitive. With a large work envelope and high workpiece weight capacity, the machine handles substantial die plates, carbide punches, and extrusion dies in production quantities.
ONA’s ONAWIN control on the RP6 provides the same intuitive interface as their slow wire and sinker EDM lines, simplifying operator training for shops running mixed EDM technology. The machine’s robust mechanical design is built for high-duty-cycle production operation with extended mean times between maintenance interventions.
Full Specifications
| Parameter | Value |
|---|---|
| X/Y/Z Travel | 500 x 400 x 400 mm |
| Max Workpiece Weight | 800 kg |
| Wire Diameter Range | 0.10 – 0.25 mm (molybdenum or brass) |
| Max Cutting Speed | 120 mm²/min (effective average) |
| Surface Finish Ra | Ra 0.8 µm (typical production) |
| Taper Angle | ±6° at 100 mm height |
| Control System | ONA ONAWIN with CNC axis control |
| Machine Weight | Approx. 3,100 kg (6,800 lb) |
| Manufacturer | ONA |
| Model | TECHNO C 400 |
Specifications sourced from machinio.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Reciprocating wire system dramatically reduces consumable wire costs versus slow wire EDM
- Large work envelope suits substantial die plates and production batch work
- ONA European build quality improves surface finish versus conventional Asian fast wire machines
- Same ONAWIN control family simplifies operator training in mixed ONA EDM shops
Limitations
- Surface finish capability does not match slow wire EDM for precision finishing requirements
- Limited taper angle capability restricts complex taper cutting applications
- Fast wire technology less suitable for tight-tolerance precision die work than slow wire EDM
Best For
Frequently Asked Questions
01
Slow wire EDM uses a single-pass brass wire fed continuously from a spool, while fast wire EDM reciprocates the wire back and forth at high speed, reusing it multiple times. Fast wire dramatically reduces wire consumption costs but typically achieves coarser surface finishes than slow wire machines.
02
The RP6 uses molybdenum wire as the primary cutting medium, though brass wire can also be used. Molybdenum wire has higher tensile strength and longer service life in the reciprocating fast wire system compared to brass.
03
Yes. Carbide is one of the strongest applications for fast wire EDM. The RP6 cuts tungsten carbide efficiently and is commonly used for carbide punch and die production, carbide nozzles, and wear-resistant component manufacturing.
Community Discussions
Community discussion — Wire EDM Cutting Conditions : r/Machinists - Reddit
Community discussion — Is there a way to run a wire EDM without it throwing bitch ...
Troubleshooting and problem-solving — Wire EDM problem : r/machining - Reddit
Pricing and buying discussion — Wire EDM Machining Questions : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.