Just wanted to share this useful web page with you all.
I have been working on a project designed to take a 1/8th inch metal dowel, but recently decided to scale it up to a larger 22mm pvc pipe.
This site made it super easy to figure out what percent to scale it to. And because it’s so quick I didn’t lose any time when I learned the new file was too big and had to scale it a second time down for a 13mm dowel… 0_o
http://news.rapidresizer.com/2012/10/how-to-enlarge-a-pattern-by-percent-or-scale.html