Edge Pro Inc The Apex Model Edge Pro is a patented system that will sharpen any size or shape blade (up to 3.5" wide), including serrated knives. Slide Guide for Edge Pro Apex Model Sharpeners 5.0 out of 5 stars 4 $49.99 Only 15 left in stock - order soon. Alternatively, get a free apex.oracle.com workspace Request a workspace on the free apex.oracle.com evaluation service. Knives can be sharpened at exactly the same angle every time, making re-sharpening so fast you will never work with a dull blade again. Apex Tutorial - Apex is a proprietary language developed by Salesforce.com. I have even done a sword on mine, lol, although I wouldn't recommend doing it very often, its a pain! It takes just a few moments to sign up, and within minutes, you'll have your workspace ready to start building Edge Pro Apex Benefits: - You are correct in that longer flexible blades are not an issue.