Read through the tutorial before starting the project. Follow all safety precautions pertaining to the tools and supplies being used and the space you are working in.
Many of us own a variety of mandrels-wood, plastic, metal-in a variety of shapes and sizes. These stepped mandrels make it so easy to make links/components in many sizes. Working on a stepped mandrel makes it easy to replicate the shape and size over and over again.
Pro Tip: Equilateral triangles (all three sides are equal in length) are made with this tool. Eight different size isosceles triangles(only two sides are equal in length) can be made on the barrels of the four different Wubbers triangle mandrel pliers. Since different wires have different tempers and springiness, it is best to work from the wire spool or coil. When I first made these links, it was easiest for me to use silver plated copper core craft wire because of the soft temper of the wire.