First up, you'll need supplies. In this case, I made my own smaller bright aluminum links, and purchased the larger green aluminum ones. Both sets of links should be 18 gauge. The smaller ones should have an interior diameter close to 4.5mm, the larger links need an ID of close to 6mm. (.5 mm or less variation is okay.) You'll need 1500 or so of each of green links and bright links, about half that if you don't plan on making the strap. (The strap is technically optional- you could attach a pre-made strap instead to save yourself some time.) You can technically make all the links, but unless you're way more awesome than I am, you'll need to buy the scales. You'll need four colors of scales: purple, blue, brown, and green. I get them in bags of 100, so you'll need 3 bags of green and one of each other color. Lastly, you'll need one sewing purse frame: the kind with holes pre-drilled in them. And of course the usual maille-making flatmouth pliers.