Originally Posted by
icmor
Years ago, when I was in college for opticianry, (yes, some of us actually earned degrees in this profession!) we were taught to file the temple at the hinges. If you needed panto, you would file more of the bottom edge of the temples, then bend the temple down at the hinge. Once you get good at it, if you file correctly, the temple will butt up to the front endpiece, and be parallel to it once the temple is bent and panto is achieved. Practice this on your stock of broken and discontinued frames before attempting this on a patient's pair. Back in the early 70's, temples were moderately wide, and we used this method quite often. Today, it's a lost "art".