" You mean this one: http://www.WoodworkingTips.com/etips/etip022500wb.html

YES:

The jig mimics the simple guide a lot of people use to cut plywood, but it
has a second (shorter) leg that wraps around the backsplash.

resrfglc wrote:
A magazine I saw today featured a JIG for cutting Post Formed Countertops
such as the one a reader had a problem with last week (and posted here).