Convert the 3D box from a stroke to a path first You could convert the strokes which make up the black box to path (Path menu > Stroke to Path), and then change the large circle with the red stroke and no fill, to a slightly larger circle with a fill and no stroke, and then difference them. If you ...

Pilosopong Tasyo, brynn,

THANK YOU SO MUCH! I think I managed to get it to work! I will write back more in detail tomorrow (it's almost 3am here now^^), just wanted to thank you!

Good night!

Dear board members, I am new to Inkscape and want to use it to create some monochrome icons I later want to use as part of an icon font. So far I am making great progress and already created some icons, but now I am stuck at the "popular" Path->Difference/Clipping/Cropping problem. I read ...