Sinker EDM is an ideal solution for the processing of low risk molds and parts. Yinchuang has rich experience in EDM machining, so we offer services with our current sinker EDM and staff, like processing mold parts or small parts. We offer reliable and precise low risk machining services.

The advantage of the sinker EDM is that it will process the material into various complex shapes without influencing the stress.

+/- 0.0002” TOLERANCE: Typical tolerance, but can vary due to type of material.
C-AXIS ROTATION: Rotation around the Z-axis allows for threaded holes in hardened materials.
12” X 10” x 10” WORK ENVELOPE: Fully-submersed in an oil bath to increase erosion rate.
32 RMS OR HIGHER: Slower feed rates increase surface finish, but increase electrode wear.
ALL CONDUCTIVE MATERIAL: Burns soft or hard metals, including carbide.
REPAIR DAMAGED HOLES: Clean out damaged walls without affecting geometric position.

A chief benefit of the sinker EDM is the ability to produce complex shapes without influencing stresses into the material. Since the electrode is sunk, or lowered, into the material, it must be wider towards the top of the plunge than at the bottom.

Unlike wire EDM, sinker EDM does not cut all the way through the material (unless desired). As a result, sinker EDM has a wider variety of applications, such as blind cavities/keyways, thin walls, or cross sections. This versatility makes sinker EDM an efficient technology for stamping dies and injection molds.

Since the reverse image must be machined out of graphite, it is encouraged that the customer provides a 3D model. The more complex the required electrode is, the costlier sinker EDM can become.