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Custom shape copper pour Allegro 16.6

Jrigbi

Hi,

I have two layer board and want to pour copper on the bottom layer. however, I want to create the copper pour in user defined shape rather than everywhere. How can I do that?

Thanks

  • You mean that you don't want to use Z-Copy? In which case, Shape>Polygon, Rectangular, Circular and check Options for the settings, Dynamic Copper and assign an Net, at least, would be common options. If you need arcs, it might be better to draw the boundary with lines / arcs and then use Shape>Compose Shape (Shape>Create Shape from Lines with OrCAD 2015 menus), to convert the drawn boundary to a shape.

  • IMHO: Why not:

    Create boundary with anti etch lines. Then do Split planes? 

    Every one seems to want to ZCOPY or manually create shapes for copper pours; I find the most difficult way to create copper shapes.

    If you use the create split planes feature it is so easy to move components around and redefine the copper pours by moving the anti etch lines.

    If you repour the copper, the netnames are remembered.....

    Regards,

    Wild

  • Hi, Thanks for your quick reply. It worked. I also wanted to know how to create a thermal relief via, which looks like wagon wheel. I know that there is a category in the pad designer for the thermal relief. But i think it doesnt create a wagon wheel around it. Please advice
  • The Thermal Reliefs will get created based upon the Dynamic Shape Parameters, DRC will use the Pin to Shape for the "pin void", either from "Spacing", or "Same Net Spacing", and "spokes" respectively, and Min Line Width for the "spokes" from "Physical" for the net, oversizes can be added. There is a Global setting and "per shape" setting for the shape parameters. Negative shapes will require the design of Flash symbols and are not a "modern" technique.
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