In the past three decades number of studies have been reported on electrochemical machining (ECM) of conducting materials based upon the electrochemical equivalent of tool and work material. But hitherto little has been reported on the use of thermoplastic composite slit as a guide for the flow of electrolytes and tool movement to enhance the performance of the ECM process (in form of dimensional stability, surface porosity, surface roughness, etc.). In this work, 3D printed PA6-50%Al composite matrix slit has been used formachining of Al alloy substrate with Cu alloy as a tool with ECM process. For comparing the performance of ECM on Al substrate two pre-drilled holes (of different diameters) were made as a slit in PA6-50%Al. The results of the study show that in the case of slit diameter less than tool diameter the aspect ratio obtained is better than the case with slit diameter equal to the size of the tool. Further comparison has been made without the use of slit while machining Al alloy for establishing the performance of ECM. The results have been supported by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and dimensional measurement in this case study.

In the past two decades number of studies have been reported on the use of fused deposition modeling (FDM) for the master pattern printing of dental crowns (DC) followed by metal investment casting (IC) in human dentistry applications. But hitherto little has been reported on 3D printed DC as master patternsfor strategic teeth (ST) of veterinary patients (VP) (canine species). This paper outlines the effect of pre and post-processing parameters of FDM for the printing of acrylonitrile butadiene styrene (ABS) master patterns for DC of canine ST. The result of the study suggests that the master pattern for DC prepared at orientation angle (90˚), density (high), and post-processing temperature (90˚C) are the best settings for dimensional accuracy (Δd) and surface hardness (based upon multi-factor optimization approach) for possible IC applications. The results are also supported by scanning electron microscopy (SEM) analysis to understand the effect of stair-casing on surface roughness (Ra) profiles while printing patterns.