![]() In the image above the keep out restricts our working area from the outer edges of the PCB and near the two mounting holes on the left side of the board. Keep outs aren’t restricted to the permitter of your board either, they can be used to identify segments on the interior that need to stay clear for mechanical or other reasons. This is not a layer that is provided to the fabricator, but rather works with your design software to provide feedback to the designer as they develop their design to indicate whether or not they are in violation of the predetermined boundaries. How To Show Additional Mechanical Layers on Your Draftsman Fabrication View in Altium Designer 19. For example, you may want all components drawn back 1/2 inch from the perimeter of your board, the keep out layer will constrain your design in this manner. 3D bodies are usually on a dedicated mechanical layer, allowing full 3D modeling of the part and PCB and even almost photo-realistic rendering if your models are accurate enough. Where the mechanical layer defines the physical boundaries of your board, the keep out layer specifies constraints on the working area of your design. Designator on a mechanical layer it can allow the diagram document to be created showing a box and something like U3. For most PCBs these additional mechanical layers are not needed though, so we won’t dive deeper into this topic. If it is linked to the contents of mechanical layer(s), you can use the Design. we create inner layers first then add more layers on both sides. Altium, Altium Designer, Board Insight, Design. While less common, additional mechanical layers are sometimes included detailing tooling specifications and other miscellaneous mechanical information. Become an expert in Advanced PCB Layout when you use Altium Designer software. This outline can be a simple rectangle or a more complicated shape with rounded corners and / or cut outs. ![]() The fabricator will use this layer to cut out your circuit board from their stock material. This is depicted by the pink outline in the image above. The most basic mechanical layer (sometimes referred to as Mechanical 1) outlines the physical dimensions of your board. You may have multiple mechanical PCB layers, but you will need at least one to fabricate your board. ![]()
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