J, it takes a little practice but you'll get it! For drilling I think most folks use a 1/16" bit. Like you said, practicing on a used carto is the way to go until you get the hang of it.
Tracy I forgot to answer you about the saddle valve...it's far easier for me than going down to the basement and fooling with my dremel. So far so good with the two cartos I have punched with it
Tracy I forgot to answer you about the saddle valve...it's far easier for me than going down to the basement and fooling with my dremel. So far so good with the two cartos I have punched with it