Of course if you want you can redefine one of the mechanical layers to be the board outline and use that instead. In Altium, for a board outline, typically you just use the Keepout layer to define it. In Altium, look for the "Generate Route Tool Path" command to generate the path easily. If you want to have inner corners, or only partially depanelize the boards or something, then you might want to provide a route tool path. If you tell the shop that you are providing a route tool path, they will make the routing tool follow the center line, and the edge of the board will be offset from that by the radius of the cutting tool.įor a simple board, it's better to provide a board outline and let the fab shop generate the route tool path for the size of tool they want to use. If you tell the shop that you are providing a board outline, they will make the outer edge of the board follow the center of the line in your gerbers. You can define the board shape either way you want. I've already emailed them four times about this and don't want to get on their bad side, so can anyone explain the correct way to define the board outline to meet my requirements?
Let's say your router bit diameter is 90mils and it follows the center of the line defining the board outline - that means it would be cutting 40mils too deep into the board, which would not only mess up the connector alignment but also create a risk of shorts since I only have a copper pullback of 20mils.
The example I gave them when asking how the outline should be defined is: Ok, 10mil from the edge of the board, but what do they consider to be the edge? Is it the center of the 10mil track I placed on mechanical 1, or is it the edge of the track? Make things simple, you need keep everything 10mil from the edge of the board. You only need to design the board in the way you want, size tolerance +/-10mil I've emailed them several times about this, but haven't been able to get a clear answer. I'm planning on ordering the board from a company called Gold Phoenix PCB. I also have a 20mil keepout line centered on the board edge, but hid the layer to make the board outline visible. I'm a student and am almost ready to have a PCB I designed fabricated, but I'm confused about how the board outline should be defined.
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