As a rule of thumb.
What does 140 pound paper mean.
For instance regular everyday copy paper is most commonly referred to as a 20 lb.
Heavier papers up to 140 lb approx 300 gsm or more are most often used for painting rather than drawing.
Each category of paper has a unique basis weight paper thickness or caliper.
If 500 sheets of this size weigh 20 lbs then the paper is classified as a 20lb bond.
The chart below details the equivalent weights in pounds between paper types as well as notes in the left margin to show when certain types of paper are most appropriate.
If 500 sheets of a standard sheet in a category weights 100 lbs then the paper weight basis weight of that type of paper will be 100 lb.
Weight in this range is similar to card stock or light poster board.
Gsm is a consistent number for papers running smaller to larger regardless of paper basis weight.
It s fairly stout can be stretched to avoid buckling when wet dries quickly and is medium priced.
When found in sketchbooks they are usually rougher papers intended as.
Here s a quick list of paper weights including grammage gsm.
Paper is measured in pounds per 500 sheets one ream of paper of a standard size of sheet based on the group or category of papers the grade.
Paper help guide understanding the differences in paper weights.
Each group of the grade of paper is assigned a standard size that all weights are referred to.
The thickness of watercolor paper is indicated by its weight measured either in grams per square metre gsm or pounds per ream lb.
The weight of these 500 sheets determines the paper s weight.
Paper less than 356 gsm 260 lb should stretched before use otherwise it s likely to warp.
There are different types weights thicknesses and paper sizes.
140 pound paper is probably the most popular choice.
Bond but is other times referred to as a 50 lb.
It doesn t require stretching costs twice what 140 pound paper costs and takes longer to dry.
The standard machine weights are 190 gsm 90 lb 300 gsm 140 lb 356 gsm 260 lb and 638 gsm 300 lb.
300 pound paper is like a board.
Paper weight also known as basis weight is measured in pounds per 500 sheets within it s category.
16lb 24lb 28lb.
Text weight to eliminate as much confusion as possible we have chosen gsm as our conversion reference point because it is a definite and universal measure of the paper.
For example the common office copy paper bond has a standard size of 17 x 22 and this is the size that is weighed for 500 sheets.
The different types of grades are bond book text cover etc.
Some of other weights for bond paper are.