If you don't own this, you should. I have made signs on the side for years and used pound in grommets. NEVER again. I would have paid 5 times more for this if I could have put my hands on it and used it. I have used it on billboard banner material folded 2 ply (even on a seam) and on corplast. It cuts right through and sets the grommet effortlessly. Buy this gadget. You will never regret.