Machine rigid, soft, non-conductive and conductive materials such as steel plates, pottery, composites, glass, and the super combination can all benefit from the process of ECDM. The writing description of different materials machined on ECDM is explained in this segment.
2.1 Ceramics and glass
Glass has distinguishing characteristics, such as compound obstruction and transparency, responsible for its use in Lab-on-a-Chip devices and micro-electromechanical systems (MEMS). In addition to these details, a few scientists defined the machining behavior of glass using ECDM over a period of time. SACE was used by Wuthrich et al. to bore miniature openings in the glass. With the addition of chemicals, a cleanser solution for electrolytes, the researchers observed improvements in gas film properties. The developers discovered that applying ultrasonic vibrations to the electrolyte in an ECDM measure enhances its machining speed, as evidenced by improved electrolyte rinsing while glass machining. In any case, the side-protected instrument cathode utilized in the experimentation decreases the overcut [14–16]. Yang et al.  fuse round instrument cathodes in machining of quartz by ECDM. The utilization of circular device terminals decreased the insecurities experienced in the hydrodynamic system. It propels electrolyte flushing in a hydrodynamic system in view of the low contact zone between the instrument terminal and workpiece. With a modification in the tool electrode tip with electrolyte flow process in the ECDM process, ceramics can be easily shaped.
2.2 Composites, steel and super-alloys
As previously discussed, and analyzed, ECDM is primarily used for machining nonconductive materials. The ability of ECDM to interact has enabled it to be applied to conductive materials such as super amalgams, metal grid composites, and steel. Hofy and McGeough  reported steel machining with wire electrochemical curve machining (WEBCAM) in 1988. They attempted to increase machining accuracy by using coaxial electrolyte flushing. Liu et al.  accounted for machining of metal grid composite (MMC) with the ECDM measure in 2010. During ECDM machining of MMC, they looked at the effects of current, obligation cycle, beat volume, and electrolyte fixation. The designers discovered that as the process constraints expand, the machining zone's starting rate increases. The nickel-based super-combinations are widely utilized in airplane motors because of their unrivaled mechanical and warmth safe properties [20-21]. For machining film cooling openings in super-alloys, an epic half-and-half technique, namely tube cathode quick electrochemical discharge boring (THE CDD), is adequate [22-23]. Yan et al. looked at how the inward width of a cylindrical anode affects the MRR and surface properties of super alloys . Because of better flushing operation, MRR is increased under this study, as is the inward measurement of the cylindrical terminal .
Gas film creation and compound shaping on the machining surface are dependent on the electrolytes used in the ECDM activity. Numerous researchers used various electrolytes throughout ECDM machining, including NaNO3, KOH, NaClO3, H2SO4, NaOH, NaCl, KCl, and pure water. The yield quality characteristics of machined surfaces are influenced by electrolyte characteristics such as electrical conductivity, thickness, fixation, and temperature [26-27]. Yang et al.  looked at the effect of various electrolyte characteristics such as electrolyte, temperature, and the ECDM measure on glass machining. They discovered the effects of acidic, nonpartisan, and basic electrolytes on the rate of machining. The acidic electrolyte, such as H2SO4 and HCl, remains unequipped for machine glass in the ECDM interaction, regardless of the age of the green sparkle. In reality, unbiased electrolytes such as KCl and NaCl produce a low machining rate with period of red flash. Be that as it may, the antacid electrolytes, for example, NaOH and KOH produce high MRR when contrasted with unbiased electrolytes. This conduct of antacid electrolyte is a direct result of the presence of OH2 particles, which advances the drawing rate in the wake of starting during the ECDM interaction. The expansion in temperature and grouping of electrolytes yields a high machining rate because of increased flash power and scratching rate.
2.4. Tool electrode behavior:
Using an ECDM measure, the analysts investigated various instrument terminal materials such as tungsten carbide, tempered steel, tungsten, copper, high carbon steel, and rapid steel throughout machining. The different metallurgical and mechanical characteristics of the apparatus cathode influence the MRR during the ECDM interaction. Due to its advantageous properties such as wear resistance, low explicit warmth limit, toughness, and high softening point, the tungsten carbide device cathode has surpassed other device anodes in popularity. It's interesting to remember that device anodes with high warm conductivity result in the discharge system's prevailing machining execution. However, this effect is limited in the hydrodynamic system due to the upward drag force caused by liquid material . SACE measure is used by Wuthrich et al.  to join needle form apparatus terminal in glass machining. The creators uncovered that needle shape device cathodes sped up when contrasted with round and hollow apparatus terminals. It is a result of assembled flash force at the apparatus cathode tip. Yang et al.  contemplated the impact of circular device terminals in ECDM measure. The ECDM interaction strengthens a new electrolyte source in the machining area by joining circular unit anodes. Because of the small contact area in between the apparatus cathode and the work material, this happened. In the ECDM method, a circular instrument anode improves the machining rate and the soundness of the gas film. The main issue at larger machining depths is ensuring proper electrolyte flow in the machining region.
2.5. Formation of the Gas film
The position of the gas film within machining area is a vital aspect of the ECDM measure that governs overcut, delimitation, and the machined surface. Electrolyte dissipation and hydrogen blend rise on the cathode surface are the basic rules that govern gas film production . Due to the inadmissibility of gas film flimsiness, while machining, experts sought to monitor and settle the gas film framework with many input measure boundaries. Present thickness, wetting of hardware terminals, bubble separation rate, gas creation rate, and so on all have an effect on gas film production . The gas film's strength ensures that ECDM measure is simple to use in modern machining. Yang et al.  looked at how the conduct of gas film arrangement changed as the surface harshness of the apparatus anode increased in the ECDM test. The researchers discovered that the surface unpleasantness of hardware cathodes has a significant impact on the wettability of hardware anodes.
2.6. Quality of Machining
With the development of the ECDM cycle, few review papers on splits, HAZ, and the surface existence of machined surfaces have been accounted. The majority of the available exploration studies, therefore, concentrated on MRR and overcut. In any case, when it comes to micromachining, HAZ, breaks, and surface efficiency are critical considerations to keep in mind [34-35].
The electrolyte and its characteristics have a significant impact on the machining aspect of machined surfaces. Nuguyen et al.  investigated the effect of electrolyte concentration on the morphology of machined surfaces. Researchers discovered that raising the electrolyte level in the ECDM measure causes a precarious gas film and poor surface quality due to lopsided flashes.