I thought it was me, then I see others struggling. So I practied and then finally got clean cuts. Put it away, took it out again (Im CONSTANTLY Cutting 8.5x11 for cardbases) and out of 10 sheets 1/2 were acceptable and the other half were jagged n uncrisp. So I thought it was me but how can some be clean and others not? I cant understand how I paid so much for a trimmer I got to CONCENTRATE on my technique. So I put it away and went back to my TH guillotine trimmer. GUARANTEED clean cuts every time. Regardless of "technique". Sorry but Im not happy with it, god knows I tried and wanted to love it.