Eagle: to "mirror" or not to "mirror"?

[earckens]

A double sided pcb requires two SMD capacitors to be mounted on the bottom side. In the "package" page I can specify the layers (1.top or 16.bottom) where each element (silkscreen, pad, mask) must be.
Do/can/may I use these settings for a specific device so that the .brd layout always assigns this device to the bottom?
Or do (have to?) I make a regular device and use mirror when designing the .brd file?

Erik

 

[JonSea]

Lay out all your packages for the top layer, then mirror when necessary to put it on the bottom.

 

[earckens]

And what is the drawback of altering the layers in the package?

 

[JonSea]

The main one is it's easier to work "right side up" than in a reversed view. Plus, there's no reason to have "top" components and "bottom" components.

 

[earckens]

The main one is it's easier to work "right side up" than in a reversed view. Plus, there's no reason to have "top" components and "bottom" components.

Great, thks!