If you are just doing the one any 90 degree cutter will work. I would strongly suggest you use a piece of masking tape as a guide for every line. You can also try taping off the rest of the stock and using a small amount of stripper such as Citristrip and a brass toothbrush to clean the checkering first to see what it looks like. You can find those brushes in the welding area of the box stores. If you have another stock to practice on to work on technique, a re-cut not done well looks worse than gummed up checkering.
