Hello Ida, I have the suction ruler handles or holders but sometimes I still have that trouble. This is what works for me--when I do it: I hold my ruler and cut so far up, like 6-8 inches. I don't go too far past my hand that is holding the ruler. Then I move that hand up the ruler and cut some more. When I move my hand off the ruler I leave the cutter in place and carefully move my other hand up the ruler. I hope this makes sense and helps. Emmy