plastic mould and custom injection moulding tips

PC/ABS, mixture of Polycarbonate and acrylonitrile butadiene  ,is a thermoplastic plastics made of polycarbonate and polyacrylonitrile (ABS), which combine the excellent characteristics of the two materials, the injection-ability of ABS and the mechanical properties, impact strength, temperature resistance, ultraviolet (UV) resistance   of PC. 1. Silver Streak Silver streak is the most common problem of PC/ABS materials injection. Silver streak is also called silver grain and silver splash, etc. It is a silvery white  stripe phenomenon on the surface of products along the flow direction. The source is mainly divided into three fields: (1) Air: the air involved in the melting and injection phases; (2) moisture: moisture contained in the plastic material itself; (3) decomposition: gas generated by high-temperature hydrolysis/thermal material decomposition. Solution: First, check whether the plastic material is dry enough. After confirming , adjust the injection molding process

      PRECISION MACHINING? Precision Machining is a process to remove material from a workpiece like plastic mold component during holding close tolerance finishes. The precision machine has many types, including milling, turning and electrical discharge machining.  A precision machine today is generally controlled using a Computer Numerical Controls (CNC). Precision machining contributes parts and pieces from space shuttle pencils. Almost all metal products use precision machining, as do many other materials such as plastic and wood. These machines are operated by specialized and trained machinists. In order for the cutting tool to do its job, it must be moved in directions specified to make the correct cut. This primary motion is called the “cutting speed.” The workpiece can also be moved, known as the secondary motion of “feed.” https://www.youtube.com/watch?v=YrbQIN2TBhM&t=609s Together, these motions and the sharpness of the cutting tool allow the precision machine to operat