This is one of many areas where Slice improves on the safety of traditional knives, including mini box cutters and standard ceramic-blade knives.When you look up how to put a blade in a box cutter, you’ll see a nightmarish list of options including complex multi-step processes and dangerous snap-off blades. The Slice Mini Cutter’s no-tool blade change is straightforward. Simply slide the lock mechanism into the unlocked postion (marked on the back of the tool) and lift off the back of the housing. Pull the small cutter blade out and either flip it over for a fresh edge or put in a new blade, ensuring that the notches in the blade and housing line up. For left-handed users, switch the blade into the second blade slot. Replace the backing and slide the mechanism back into a locked position. Now you’re ready to use this amazing small cutter again!