Yes John is right. If your blade is too exposed it will hook as you begin to cut so reduce the penetration. This firms up the blade as a result. ----- Original Message ----- From: Johnsimage@xxxxxxx To: pure-silver@xxxxxxxxxxxxx Sent: Saturday, April 15, 2006 5:00 PM Subject: [pure-silver] Re: mat cutting service? Hi Karl, It is caused hooking. The blade is to deep into the undermat. Readjust your blade to just penetrate the mat your cutting. john