Stampin' Up! has introduced the Diagonal Plate to be used with the Simply Scored tool, and it is available now (item #125586 - $15.95)! This tool allows you to make custom envelopes easily, as well as boxes and diagonal score lines for techniques and fun fold cards. It fits right on top of the Simply Scored tool, and has 1/8" score lines. Stampin' Up! has created a video showing how it works and how to make envelopes with it.