All About GSM: A Beginner's Guide to Paper Weight

All About GSM: A Beginner's Guide to Paper Weight

When it comes to choosing the right paper for your artistic endeavours, understanding paper weight can be a bit perplexing. One of the key measurements to know is GSM, which stands for grams per square metre. This measurement helps you assess the thickness and weight of the paper, providing a clearer comparison than the traditional pound measurement often used in the United States.

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What is GSM?

GSM is a straightforward way to determine the weight of a
paper by weighing a one-square-metre sheet. The higher the GSM number, the
thicker and heavier the paper will be. For instance, a paper with a GSM of 150
is considered thin and easy to bend, while a 250 GSM paper is much sturdier and
harder to fold. In general, the higher the GSM, the better the quality of the
paper.

Quick Guide to GSM Levels:

60-100 GSM: Standard for everyday print paper, like typical A4 sheets.

110-140 GSM: Common for posters and flyers—sturdy enough for some wear but not suitable for fine art prints.

170-200 GSM: A more robust paper; a good choice for fine art prints.

210-300 GSM: Generally considered premium fine art paper, offering a thicker, more tactile feel.

310-400 GSM: This range is card-like, ideal for items like greeting cards and invitations.

Choosing the Right GSM for Your Project

When selecting paper for your artwork, consider the GSM based on the medium you intend to use. Standard printer paper usually falls between 80-100 GSM, while watercolour paper often ranges from 180-300 GSM due to its need for thickness and durability.

General Paper Weight Recommendations:

40 GSM: Tracing paper

75-90 GSM: Sketching or practice paper (for dry media only)

100-130 GSM: Standard drawing paper

150-270 GSM: Heavyweight drawing and mixed media papers

300-350 GSM: Best for painting (watercolour, acrylic, and
oil)

Light to medium-weight papers work well for sketching and light washes, while medium to heavyweight papers can handle more substantial applications like watercolour and gouache. Heavier papers, often above 300 GSM, are perfect for oil and acrylic painting, as they can withstand the moisture and weight of these media without buckling.

Final Thoughts

Choosing the right paper can significantly impact your artistic process and results. By understanding GSM and its implications, you can select the best paper for your projects, whether you’re sketching, painting, or exploring various mediums. Don’t hesitate to experiment with different weights and textures to find what inspires your creativity the most!