Before you start your project there are a few important tips to get the best from your paper.
GSM and thickness have no correlation.GSM is one of the most misunderstood of all the paper terms. GSM stands for “grams per square meter”. Put simply a sheet of paper 1 meter by 1 meter, weighing 200 grams would be 200 GSM. It is often thought that all papers of the same GSM would therefore be the same thickness. This is not the case. Paper is made up of tiny cellulose fibers. The weight of the paper depends on how densely packed these fibers are.
Grain DirectionGrain direction is another misunderstood term.
When printing thicker cards consider using “short grain” cards so the card will mold more easily around the printers rollers.
You will also get a much cleaner fold if the grain runs parallel to the fold. If the wrong grain direction is used in a booklet the pages will tend to spring open rather than lying flat.
Lastly leave your paper wrapped up and airtight.
Unwrapped, the edges of the paper start to absorb humidity and expand. This makes the paper become wavy and unusable.