How to Sharpen Your Rotary Cutter Blade - Simply fold a piece of foil a few times and just slice away with your blunt dull rotary cutter, pausing a few times to test it out on your fabric scraps till it starts slicing away your fabric too! You will end up with an almost new rotary cutter!
How to sharpen your rotary cutter blade - Fold a peice of kitchen foil wrap (the kind you use in the oven and BBQ). Fold about 4 times so its thick. Place folded foil on your cutting mat and run your rotary cutter over it many many times. Your blade will be sharp again. This also works for paper punches. Just use one layer for punches or it will jam up.