Mirror a layer

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Why we need mirroring?

We need to mirror the data of one side for double sided PCB's to get the patterns the correct way, it could also be true that the data for a single sided PCB needs to be mirrored because your program did not mirror the output for you.

NOTE: always generate your gerber and drill files in the same direction if possible. (just like you see them on the screen)



select mirror over fixing holes
the current layer will be mirrored exactly over the fixing holes, in this way your PCB will be always in sync if you flip it over.



this is how the PCB looks after mirroring.