Paper Grain
The direction in which the fibers of the paper are oriented. It is important to ensure that the grain direction is parallel with the bind to achieve the best results.
 

The chart below shows the comparative weights of different paper stocks. A paper’s weight is based on the weight of 500 sheets of that paper in its master sheet size. Since the master sheet size varies according to paper type, the weights of the papers are not always consistent. 24-lb. Bond paper, for instance, has a lower weight number than 50-lb. Text, even though it is heavier paper. This is because the basic sheet size for Bond paper is 17” x 22”, while the basic sheet size for Text is 25” x 38”. To avoid confusion, it is often safer to discuss paper in terms of its gram weight. Please note that in some cases, the weights shown may not be available for certain paper stocks and are shown for comparison purposes only.