Answer: Etching Shears will not work for long cuts. Try metal ruler straight edge and a hobby knife with the tip of the blade broke off. Score the cut line many times (Carefully). Deeper the better. Then bend the scored side up slightly and then flip, secure it and bend the other way. It'll break on your scored line. Deeper the better. If you have one of those bigger size "Hold and Fold" tools from www.thesmallshop.com you have a better chance of success in your scratch building endeavors!