Proves we have 'sense'. What makes 'sense' to us, has and does make 'sense' to a huge amount of others. That 'sense' enabled others to get their ideas out there first and do something about it, like copyright and patent them. Takes money to do this, and lots of trials and tribulations. Now, do we all have the 'sense' to do something about our thoughts?
I have been using cardboard to 'press fabric over the edge for accurate applique piecing'. Works every time and I guarantee you it doesn't melt. I also use cardboard (the thin type used in picture frames) for measuring exact seams when I iron. I draw a line 1/4" (or whatever length I need) in from the edge of the cardboard. Then I place the fabric under the cardboard, bring up the edge of the fabric over the cardboard until it meets the the line I drew. Then I iron. Perfect 1/4" every time.