My question... When cutting on my mat, the line's are thicker than my rotary blade of course, so after I have everything lined up do I put my ruler on the line or on one of the sides of the line to get the accurate measurement I need.
I find myself doing different each time, that's why my measurements are off I'm sure.
I know this is probably not clear what I'm trying to ask, but if someone understands and knows which way is accurate please tell me.
For example: If I need to cut it 15", which way would be the most accurate to get that? On the 15" line or on the side of the line, and if on the side, which side right or left?
This is something I've struggled with for a long time. If I knew the right way to do it, it would make my sewing life so much easier. Help!