If you prefer to use rotary cutters in lieu of fabric scissors in the dressmaking process, you most likely have a nice cutting mat that provides you with a safe and accurate way to cut your fabric pieces, especially when cutting your sewing pattern.
Just as the cutting mat prolongs the life if your rotary blade and your table surface, so should you do your best to preserve the quality and life of your cutting mat. The secret is in how you store your cutting mat when not in use- never roll your cutting mat (especially for extended periods of time) and always store it flat ether in a flat surface or leaning against a surface that keeps it fairly flat.
Rolling your catting mat in the storing process will not only cause damage to to its surface over time it will also distort its smooth/flat quality making it more uncomfortable to work with in the cutting process.
A cutting mat that is consistently stored flat will maintain its stability and smoothness in the fabric cutting process. The mat should lay completely flush with the table surface and provide a stable working station when cutting precise lines with a rotary cutter. A well preserved cutting mat is especially important in dressmaking, where cutting your sewing patterns with a rotary cutter has to be done as smoothly and as accurately as possible to avoid size and ft deviations in the cut fabric pieces comprising the garment.