First time I used the 24x6 ruler was to cut layer cake squares in half; the very first square my hand with the rotary cutter went halfway up the block and then swerved off to the right. Ruined the right side of the block. One day I went into a Joann's on the way back from visiting friends south of here, and walked into a huge quilting dept sale. I bought the June Tailor Shape Cut ruler at 40% off. It's my favorite ruler and try to use it all the time. Makes perfect cuts each time. I've gotten much, much better with the regular ruler, but it's not my preferred method at all.