Increasing brim also decreases usable print area

[Aerospike 0]

I recently noticed that when I increase my brim line count or width it also increase my outside margins. I'm trying to print an N-95 mask that only is touching the center area and flares out near the edge as it goes up. So the brim is no where near the edge, only the upper Z axis. Because of this my max brim can only be 2mm. Way too small. 

 

Is there a setting that is active I don't know about that locks increased brim/skirt/raft width with the outside margins? Or a way to override the margins completely?

[peggyb 169]

you could try another solution with benefits:

import a disc/cylinder from a cad program and scale it to your liking in size, with the same height (z) as the first layer.

The place the items on critical places like corners, turn off brim and use skirt.

I use this with materials that have a strong warping and don't want to peel off the brim a from complex shape.

[Aerospike 0]

I do like that idea both as a work around and just as a tip to use in the future. What is the outside gray area called? I'm having issues just looking up where that setting would be normally in Cura.