The selection of wrong drill bits could result in accidents, damaged tools and workpiece damage. A drill chart helps you attain a strong and secure thread and also tells you how deep to drill for the thread. While making tap holes, it is also important that it gets enough depth. A chart tells you the tap sizes so that you get a secure and matching drill bit connection. Tap sizesĭrill charts are also useful when making thread depth for screw bolts. Refer to those charts, as they will tell you what should be the right speed when drilling it will save the drill bits from getting overheated or damaged. Although general-purpose drill charts do not contain this information, you may find this information in the charts that are specifically designed for a particular material. To make holes in different materials require different drilling speed and techniques. Mis-matching of these bits may result in loose connections or damaged material. You need a drill with the correct diameter in order to make precise rules on the surface of the material. The drill chart contains information about the right drill bit size for many purposes. Importance of drill chartsīelow are some reasons to understand why drill charts are important to get the right drilling results. These charts are easily available on the internet, in reference books and in tools manuals. In a typical drill chart, there are rows and columns.Įach row represents an aspect or size, and the column represents information related to that aspect or size.
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