quiltsRfun

I have both sizes of the Shape Cut rulers and use them both, the larger one when cutting from yardage, the smaller one when cutting from fat quarters. I've never had problems with the ruler slipping or the rotary cutter coming out of the slots. When they wear out I may consider replacing with a Stripology. If I could get a Shape Cut for the price you paid I wouldn't think twice about buying it. BTW, Shape Cut also has instructions for cutting in 1/4 inch increments. I mark the slots for the sizes I'm cutting with a blue painter's tape triangle. It works well for me. I also cut from the right edge to the left, holding the ruler secure with my left hand. This seems to keep it from slipping. I suppose you could use grip strips if slippage is an issue.