Do you have a good recommendation for a tool that will make a perforated line on card stock? This would need to be a line that can be folded and torn so the one portion can be mailed as a post card. Thanks, Thea
— tjh13771, MN on Jun 02, 2011

There is a blade that fits inside the Fiskars Rotary Trimmer that can do just that! It's available for purchase at Archivers Annex: Hope this helps!