I am looking to learn how to use a Carey hinge template (#300-2). I bought mine at an estate sale and there were no instructions. While surfing the internet I've noticed that Bosch and Porter Cable also make templates/jigs for mortising butts, although I have no idea about similarities in/of design nor set up/use. Ideally, you might be able to refer me to an instructional video of some sort (?), as a picture is worth a thousand words. O.K. then, this is where I say thanks for your time and I look forward to hearing from you, maybe.