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Used Wire EDM

Are you looking for a used wire EDM machine? Over the years used Wire EDM has advanced in speed, workpiece size, taper, price, accuracy and with CNC EDM, unattended operation abilities.  It uses a single string of thin metal wire for precise incisions in thick metals. In wire EDM, a wire acts as the electrode on parts submerged in deionized water. The water flushes away the debris for a clean saw-like cut.

Wire EDM vs. Conventional CNC Machining

Wire EDM is capable of doing things that traditional CNC milling, turning and grinding cannot do. Typically manufacturing engineers choose wire EDM for a process only if it’s not possible to do on another type of machine. However, there is are many processes that can be performed by both wire EDM and other CNC processes. Conventional and wire EDM compete on finished part geometry, workpiece hardness, surface finish, and cost. Here’s a quick comparative look:

  • Part Geometry: Since with wire EDM there are no cutting forces and extremely small cutting widths, wire EDM is capable of making very thin walls, internal corners with very small radii, thin slots in extrusion dies, producing non-round openings and cavities, and can be an alternative to broaching on 2D shapes. For these kinds of complex geometries, wire EDM has the advantage.
  • Hard Materials: Material hardness doesn’t have the same effect on wire EDM processes as it does for machining. It’s easy to cut tungsten carbide, tool steel, Inconel and other metals harder than RC38 on wire EDM as compared to conventional machining which is slow an expensive.
  • Surface Finish: Unlike conventional machining which has cutting tools affecting the surface finish, wire EDM makes a very random texture. Wire EDM can produce surface finishes as smooth as 5RMS in the hands of a skilled operator.
  • Cost: For parts with complex 2D geometries, hard materials or other characteristics that make it a good fit for wire EDM, here are some of the advantages:
    • Cut without buying special tooling like conventional machining equipment requires
    • Cut multiple layers of laminates at one time
    • Slugs can be cut instead of chips
    • Eliminate secondary finishing operations
    • Make parts in one setup

Limitations of Wire EDM

  • Requires an electrically conductive workpiece (doesn’t work on wood, plastics or composites as machining does.)
  • Slower material removal rate as compared to machining
  • Can only cut 2D profiles, though with a 4th axis can make conical forms and tapers
  • Cannot cut blind holes (see sinker EDM if you need blind holes)

Everyday machine shops across the country are upgrading their EDM’s in response to growing demand, changes in product mix, and company priorities. Buying a used wire EDM’s is a golden opportunity for you to save time and money by increasing your productivity. We are a trusted source for used wire EDM machines and consistently take trade-ins. Contact us, and we’ll help you find the best used wire EDM machine for your business.

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