I DO and I love them!!! You do have to be careful when inserting the rotary cutter into the slot, so you do not nick the blade..............I have a few (one for each size strip I need to cut because the one that has 1/4" markings and my math or counting issues leads me to put ruler in wrong slot)......they make really quick work of cutting, no ruler slipping,,,,,strips all all the same width.............you wil not be sorry if you get one of these........If Joan's has a coupon, that may be your cheapest source.