If this point fails to be indicated by PCB design engineers, those information will be left on end product with possible scrap generated. For example, some PCB design engineers would like to define component parameters in design files but they don't want the information to be shown on the final product. The generated Gerber files may not be what PCB designers expect. Because electronic engineers working in PCB fabrication house understand printed circuit boards from a completely different perspective from PCB engineers do. The ordinary workflow is that after receiving PCB design files, board fabricators have to transform them into NC drill files and Gerber files before manufacturing. They have been used to finishing PCB design files or exporting the design files from PCB cloning software and sending them to circuit board manufacturers. Nevertheless, the factual situation is that a number of engineers tend to send PCB files directly to PCB manufacturer without converting them into NC drill files or Gerber files. It's of significant necessity for PCB design engineers to create NC drill files since a lot of trouble can be avoided when PCB files are converted into NC drill files and Gerber files. NC drill file, short for numeric control drill file, refers to a type of file regulating all the information concerning hole or via drilling requirement including tooling size, hole size and location.
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