Learn how to do a perfect glass score with Joe Porcelli. Great tips on how to get the perfect score every time. This tip is from "25 Pro Tips & Techniques For Stained Glass" DVD. Get all the invaluable insider tips from Joe Porcelli in this wonderful 50-minute training video. Joe's fantastic time saving tips will make any stained glass project easier and more efficient. Benefit from years of workshop experience on topics including glass cutting, foiling, and soldering tips. The latest release from one of the glass industry's most sought after instructors.