Good evening. I am designing a very simple circuit board for a power supply filter for our vehicle electronic systems. My intent is to use a single-side PC board and have it milled rather than using a chemical etch process.
The board will have two holes (#51 drill) to mount an inductor, two holes (0.196) to mount a screw-mount electrolytic capacitor and four holes (0.196) for #10 screws to secure the ring connectors to the wiring harnesses. Finally, there is one place to mount an SMD capacitor.
To accomplish this, I can make the board by milling just two lines across the board and drilling the holes and for the prototype, I did just that. But now I would like to send this out for production at a firm that does PC boards by milling and they would like an Eagle file (presumably processed into a Gerber).
The question will make it obvious that I am a noob with using Eagle, although I have done some circuit boards successfully. What I have not been able to do is figure out how to do a circuit board that is the opposite of the other boards I have done; i.e. this board is nearly all copper with two "un-traces" rather than being nearly all bare board with a couple of traces. I guess from that perspective, it will look like a ground plane with two interrupting lines.
I tried using the rectangular tool to create the copper areas but what layer do I assign them to and how do I show the traces that are the reverse of a standard trace? What layer should they be assigned to?
Once I get past that hurdle, I know there is a UDL to prepare the file for milling operations rather than etching but I'll ask about that when I'm ready for that step.
Any help will be appreciated!
