Product Overview The Flattening and Groove Pressing Machine is a dual-function integrated unit for hardcover book finishing. It simultaneously flattens the entire cover and presses the hinge groove along the spine, eliminating the need for separate machines or manual scoring. With adjustable pressure from 2 to 5 tons, it works on both round spine and square spine hardcover books, delivering a professional, crisp groove and perfectly flat cover in seconds. The operator places