To make a product must be straight. Uneven paper with "wrinkles" and "tight edges" should be treated. Lotus paper can be baked, while "tight edges" paper can be dried. After the impression is dried, it must be covered with a film, otherwise it will cause blisters or scratches. Try not to spray powder when printing, otherwise it will cause bubbles in the powder pile. Before lamination, the powder should be sprayed out. If the amount of printed matter is large, the powder can be hung up and removed. If the number of fingerprints is small, wipe the powder manually. Pay attention to the direction of the paper strands, especially thick paper, to reduce curling caused by winding and stretching.