Saturday, October 15, 2016

Folding with the Grain

A fold will be smoother and more resilient when the grain of the paper is parallel to the fold. Paper grain is the direction of the wood fibers in the sheet. Paper folds smoothly with the grain and roughens or cracks against the grain. Paper is also stiffer in the grain direction.
As a rule, we print on the sheet so that folds will be with the grain. When this is not possible, we score or crease the paper fibers to stretch them evenly before folding. Scoring is necessary for all heavy weight papers like cardstock, for some text weight papers like glossy, and when an area of heavy ink coverage crosses through a fold.

Stack of booklets folded against the grain produces a rough broken edge.

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