rt428.... Just keep in mind that the cutting is not done by pressure on the block. It is the paper itself that does the cutting. The pressure on the block should just be enough to hold it against the panel. With the flexable blocks particularly, the amount of pressure will have a big effect on the contour of the panel. With the longer flexable blocks, you can end up with it cutting low spots where your hands are, while you are trying to cut what appear to be high spots in the middle. They take practice and concentration.