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Electric Discharge Machining (EDM) is a recognized and commonly used non-conventional machining method for the manufacture of complicated shapes and the processing of particularly hard materials, which are very difficult to machine by any standard machining processes. In this process, there is no direct contact between the electrode and the work-piece, this non-contact machining technique is constantly rising from the press tool and dies the process creation Process for apps for micro-level machining. In the latest decades, several researchers have focused on enhancing machining process capability such as enhanced rates of material removal with improved surface topography. Powder mixed electrical discharge machining (PMEDM) may be a newly developed technique for improving the EDM process capabilities of the EDM process in this trend. In this paper, a broad history, mechanism of PWEDM method, and literature review are presented.

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Fused deposition modelling (FDM) is second most widely used additive manufacturing process worldwide. Performance of the FDM system is highly effected by number of parameters such as environmental factors, material properties, part orientation and supports, machining parameters and working parameters. Working parameters specifically raster angle and width, layer thickness and amount of infill highly effect the mechanical characteristics of additively printed parts. Part orientation which is directly proportional with support generation, is mandatory requirement for hanging parts but it results in poor surface finish and require more post-processing. A proper selection of material is one to the key factor of success of functional prototypes produced from FDM system. Various materials categorized as biodegradable/non- biodegradable, biocompatible, water soluble/insoluble, etc. can be processed on considered system. A various commercial and open ware software’s can be used to identify optimum value of working parameters for best results. In present work, a comprehensive review has been carried out to check the effect of working parameters on the performance of the FDM printed parts. Study also supported by the understanding of the various materials reinforced by FDM system and new possibilities are identified for future work.