Manual Slab Roller Printmaking Machine with Reducer Clay Portable Tabletop Adjustable No Shims. Note: the reducer is also manual, making the machine run more smoothly and operate with less effort. Printmaking is a vital contemporary graphic art form, based on the transferred image and. Encompassing a variety of studio processes, each with innate image qualities. Is the size of the work piece processing positioning, batch processing is a good helper. Mainly used for making relief plate. Used for gravure production. Used for the production of other kinds of pressed artworks. Lay the pad flat on the slide of the roller shaft. Place the finished plate on the pad with ink. Rotate the lifting hand wheel so that the roller is in a proper position downward, pressing down one end of the above “assembly”. Rotate the forward handwheel on the side. It’s a combination that slowly moves forward until it’s finished.