This is normal. As you cut through the media to be cut, a strange grinding noise will be heard and your blade will dig into the mat. It's almost like there's a middle layer underneath and it's slate or 200 grit sandpaper. They're not the best at self-healing either. I have another rug that I have had for years and it has almost none of the damage that this one does after a month of use.
Clear 1-? X 12-Inch Omnigrid Ruler For Precise Quilting And Sewing
13 Review
Ergonomic 45Mm Rotary Cutter Set With Safety Lock And Replacement Blades For Sewing, Quilting, Scrapbooking, And Arts & Crafts - Worklion
27 Review
Large And Portable Wool Ironing Pads For Quilting & Sewing - 17" X 24" And 10" X 10" Sizes With Scissors, Tape, Felt Storage Pouch, And 40 Sewing Pins Included
23 Review
Triangle Group TR259 225/65 R17 106V summer
55 Review
Anezus 6800Pcs Rhinestones Kit: Sparkling Accessories for Countless Crafting Projects
7 Review
𧲠Enhanced Magnetic Large: Basic 8 Inch to 32 Inch Size for Optimal Performance
9 Review
π Tulip One-Step Tie-Dye Kits Rainbow - 5 Colors, 1.62oz
7 Review
Coolrunner Mixed Food Resin Flatback Kawaii Cabochons Decoden (60) - Adorable Assortment of Miniature Treats for DIY Crafts and Decor Projects
9 Review