You want to figure out your cost per inch thats your magic number. First take 20" x (25yds =75'=900") 20x900=18000 sq/in. Now take your cost per roll let's say it is $36.00. Take 36/18000=.002 that is your cost per inch. So taking your 14x10 design thats 140"x.002=.28 cents. Assuming no waste your cost would be .28 cents in material.I am trying to figure out how to calculate with my cad-cut machine.
For example, if I cut something that is 14x10. The roll is 20" wide and is 25 yards. Is there a calculator out there I can use? Or what formula do I use. Please let me know.