I use this tool to cut strips of material to make rag rugs, it has speeded up the process so much! I used to use fabric scissors, I am now converted to the rotary cutter. The blade is ultra sharp and is able to cut through thick denim with only minimal pressure, thin fabric you need only to roll it over. The safety mechanism is great, I dont think it would be possible to hurt youreself with this unless you were messing around, definatly one to keep out of reach of children, just in case! in short, labour saving.