Rotary cutters are a great tool for a variety of crafts. Eventually you will need to change your blade when it becomes dull. Below are easy to follow instructions to assist with this process for the 45mm RTY-2/G Straight Handle Rotary Cutter and the 60mm RTY-3/G Straight Handle Rotary Cutter.
Instructions can be downloaded here.
Or you can watch this short how to: