Second, the use of the underscore is a safeguard against a sneak attack of the metacharacters. In this example, there are three fields, the first represents the mechanical layer number, the second provides a brief description, and the third, if used, provides whether the top or the bottom is being viewed. First, it simply makes it easier to discern between the three fields of information within the name. The details of the name are separated by an underscore ( _ ). In the above example, no white spaces were used. Therefore, starting with the prefix of the original mechanical layer name allows you to quickly translate between the purpose of the mechanical layer and the actual name of the layer. In the example above, all mechanical layer names start with the format 'M#.' In most EDA tools, the user can rename the mechanical layer however, that's simply an alias for its real name that the system will use in its. When it comes to names, there is a need for consistency. Therefore, whatever is established for your company should be agreed upon by all and followed thereafter. However, as with all library components, consistency is crucial.

The order, the colors, and the names are up to the company. The purpose of this paper is to guide you along a reasonable path so that a robust set of layers can be established for your company, in addition to setting up the layers so that it is easy to assemble one's documentation. Several manufacturing issues have their roots in the lack of information being passed along. Though the manufacturing of the PCB is highly reliant upon machine formats such as Gerber or ODB++, these formats do not convey all of the needed instructions.

With a few exceptions, the purpose of the mechanical layers is to convey human-readable information. The layer set presented in this writing may be more than necessary. Would one need all 42 of these layers? This is not the case. The list contained over 42 different layers! Several years ago, there was an effort by Darren Moore, an expert user of Altium Designer, who compiled a list of all the unique mechanical layers that designers have used to represent key elements of their designs. We will start by stating that there is no official standard when it comes to mechanical layers. A Guide to Mechanical Layer Configuration

Mechanical layer altium