P: Artboards and Cropping

Hello, I'm digging up this old post to add some information. I see that there's a suggestion to use the marque/mask tool to trim a layer on an artboard. However, the problem is that you can't select with the marquee tool outside of the canvas bounds (which are automatically set to the outside bounds of all the existing artboards). That means that I'm unable to select areas that go beyond that bound, resulting in incomlete trimming of layers. It makes for a messy attempt at clean up that is almost worse than leaving all the information there and having a giant file.

A feature suggestion to help alleviate this situation might be to create an option to select an area and then delete information outside of the selection. Or maybe allow a layer crop option that has some kind of bleed around the artboard.

Gud point @hilbrandbos

@JeffreyTranberry That is so backwards. Once you have the artboards you want to have the ability to throw everything away that is not within the bounds of the artboard. You need this function to keep your filesizes manageable. So why the crop tool doesn't work on artboards is beyond me. 

I don't want to bother with 6GB psb's. I want to be able to clean up and throw everything out I don't need.