I use 7 mil. For reference The Cookie Countess uses 5 mil. You can also find 6 mil on Amazon. A lot of people use that and say it is a good happy medium between too thin and too thick for their preference.
Amazing tutorial! Very detailed but to the point … Thank you! What would be the best line width for PYO cookie stencils? What would be the best line width for regular text stencils?
It really depends on the material you’re using, the intricacy of the design and also comes down to personal preference. I like some fonts and designs chunky while I prefer others to be more delicate looking.