so I went to the local printing store where they can print stuff on cardstock.

I printed 1 page (using --background black --cropmark during PDF creation) and the crop marks are not visible at all on the paper. The crop marks are visible when viewing the PDF on a monitor though.

Viewing the PDF inside gimp, it seems to be the crop mark is around 1-pixel in width. Maybe this is too small?

Any ideas/suggestions on how to fix?

Thanks!