Tube cutting jigs are used in conjunction with a jewelers saw. They hold your tubing (or large-gauge wire) in place so you can neatly make straight cut after straight cut, exactly the same length. This is very useful when making hinges, rivets or eyelets.
Metal disk and shape cutters provide a great shortcut for jewelers wanting to create custom metal blanks and jewelry components. These tools allow you to cut several consistent sizes of circles and discs from sheet metal with little effort. To use, slide your metal sheet between the die plates, insert the cutter, and tap firmly with a brass hammer to cut the desired size. Intended for use with soft metals that are 24 gauge or thinner. Some sets give you the option to make concave and convex disks in addition to flat disks, expanding your design options. Choose from 5-piece to 21-piece circle cutter hand tools made of steel. (The higher priced cutters generally cut smoother, and require less smoothing and finishing, as well as less force.) For more variety, use with a dapping set.