Originally Posted by gramalama9
What kind of cutter do you have? The HF blades have a round, not notched hole, so if you used them in an Olfa or Fiskars, they may not fit right. Martelli cutters use the round hole.
I have a cutter w/a notched hole but the side that the blade goes is round.
My cutting mat is fairly new, as in less than two months.